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موضوع: موقعیت‌های خالی در دانشگاه‌های خارج از کشور (رعایت قوانین پست اول الزامی است)

  1. #61
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    پیش فرض پاسخ : موقعیت‌های خالی در دانشگاه‌های خارج از کشور

    PhD position

    with the topic of research “*Mechanics and dynamics of biological adhesion*”.
    Within a SFB funded PhD project, we propose to examine cell mechanics and dynamics of Dictyostelium discoideum adhesion. We will compare spatiotemporal patterns of adhesional complexes from single cells to collective phenomena on the population scale.
    The PhD students will apply quantitative experimental assays using mainly optical imaging procedures in addition to either atomic force microscopy in conjunction with microrheology or impedance spectroscopy in conjunction with microfluidics and state of the art computational modeling.
    The PhD student will further expand already existing collaborations between groups at the Georg August University of Göttingen (Chemistry and Physics) and the Max Planck Institute for Dynamics and Self-Organization in Göttingen.
    He / She should be:
    - Interested in applying impedance spectroscopy, AFM and fluorescence microscopy
    - Interested in microfluidics or microrheology
    - Interested in biology, non-linear physics and complex systems
    - Willing to develop and program a model in collaboration with theoretical physicists
    - Participating in the mandatory graduate schools including teaching assistance and therefore also
    have good English language skills
    The position is limited to 2 years with an option of a one year extension. Working hours are 19.5 hours per week and payment is according to the working hours ½ of the German E13 TVöD – Bund.
    The Max-Planck society is committed to increasing the number of individuals with disabilities in its workforce and therefore encourages applications from such qualified individuals. The Max Planck Society seeks to increase the number of women in those areas where they are underrepresented and therefore explicitly encourages women to apply.
    For further information, please contact Dr. Marco Tarantola via email (marco.tarantola@ds.mpg.de).
    For an application, please include a full CV and transcript of records, quoting reference number 13/2014. Application deadline is the 28.02.2015.
    Max Planck Institute
    for Dynamics and Self-Organization
    Dr. Marco Tarantola
    Am Fassberg 17
    D-37077 Göttingen, Germany…

  2. #62
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    پیش فرض پاسخ : موقعیت‌های خالی در دانشگاه‌های خارج از کشور

    Development of Characterization Devices for Magnetic Nanoparticle Synthesis in a Microfluidic Workflow

    PhD position as Electrical or Mechanical Engineer (E13 (75%) or equivalent stipend)

    16.01.2015, Wissenschaftliches Personal

    This PhD work is part of a research project funded by the International Graduate School of Science and Engineering (IGSSE) with the title “Microreactor with integrated characterization for the synthesis of magnetic nanoparticles (MiCSMaP)”. The PhD work will be conducted in the Magnetic Fields group at the IMETUM (Zentralinstitut für Medizintechnik der Technischen Universität München) in Garching and will be co-supervised by the Microarray Group at the Chair of Analytical Chemistry in Großhadern.
    The work package includes:

    • Development and testing of a Dynamic Light Scattering Module for the Size Determination of MNP
    • Development and testing of a Module for Zeta Potential Measurements
    • Development and testing of a Counter Module based on Nuclear Magnetic Resonance at low magnetic fields
    • Implementation of the above into the microfluidic reactor

    We are looking for a talented young engineer who would like to do his/her PhD thesis in an international and interdisciplinary work environment.

    Qualifications:
    The applicant should posses a Master’s degree or equivalent in engineering preferable electrical engineering. Excellent writing and communication skills in English are required as well as basic German. The applicant is expected to have profound knowledge in programming of micro controllers in C and analogue/digital circuit design as well as to have experience in PC board layout. Furthermore, experience in signal processing and microfluidic systems are welcomed. Knowledge of colloidal chemistry would be advantageous but is not obligatory. The candidate should have problem solving skills and general craftsmanship. Additionally, the applicant should be able to work in an interdisciplinary and international work environment.

    Our offer:
    The successful candidate will become part of the IGSSE and a member of the Technische Universität München (TUM). The program will actively assist the candidate in achieving a doctoral degree within the scheduled time of three years. She/he will obtain an interdisciplinary training and a solid knowledge of adjacent research fields. The candidate will work together with other PhD students from different fields in a highly interdisciplinary work environment. Guest research stays for up to three months at renowned international partner universities are part of the program as well. The payment and the conditions of employment follow the specifications of IGSSE projects at the TUM.

    Application details:
    As part of the Excellence Initiative of the German federal and state governments, TUM has been pursuing the strategic goal of substantially increasing the diversity of its faculty. The TUM is an equal opportunity employer. TUM aims to increase the proportion of women and therefore particularly welcomes applications by women.
    Applications should include curriculum vitae, certificates and transcript of MA/Diploma or equivalent degree, summary of the previous work, letter of motivation, proof of fluency in English and names of two references. Please send your application within one pdf-document.

    Kontakt: Dr. rer. nat. Christine Rümenapp (Project team leader), Phone: [IMG]resource://skype_ff_extension-at-jetpack/skype_ff_extension/data/call_skype_logo.png[/IMG]+49-89-289-10816, Email: ruemenapp@tum.de

  3. #63
    Junior Member
    تاریخ عضویت
    Apr 2012
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    پیش فرض پاسخ : موقعیت‌های خالی در دانشگاه‌های خارج از کشور

    Development of Characterization Devices for Magnetic Nanoparticle Synthesis in a Microfluidic Workflow

    PhD position as Electrical or Mechanical Engineer (E13 (75%) or equivalent stipend)

    16.01.2015, Wissenschaftliches Personal

    This PhD work is part of a research project funded by the International Graduate School of Science and Engineering (IGSSE) with the title “Microreactor with integrated characterization for the synthesis of magnetic nanoparticles (MiCSMaP)”. The PhD work will be conducted in the Magnetic Fields group at the IMETUM (Zentralinstitut für Medizintechnik der Technischen Universität München) in Garching and will be co-supervised by the Microarray Group at the Chair of Analytical Chemistry in Großhadern.
    The work package includes:

    • Development and testing of a Dynamic Light Scattering Module for the Size Determination of MNP
    • Development and testing of a Module for Zeta Potential Measurements
    • Development and testing of a Counter Module based on Nuclear Magnetic Resonance at low magnetic fields
    • Implementation of the above into the microfluidic reactor

    We are looking for a talented young engineer who would like to do his/her PhD thesis in an international and interdisciplinary work environment.

    Qualifications:
    The applicant should posses a Master’s degree or equivalent in engineering preferable electrical engineering. Excellent writing and communication skills in English are required as well as basic German. The applicant is expected to have profound knowledge in programming of micro controllers in C and analogue/digital circuit design as well as to have experience in PC board layout. Furthermore, experience in signal processing and microfluidic systems are welcomed. Knowledge of colloidal chemistry would be advantageous but is not obligatory. The candidate should have problem solving skills and general craftsmanship. Additionally, the applicant should be able to work in an interdisciplinary and international work environment.

    Our offer:
    The successful candidate will become part of the IGSSE and a member of the Technische Universität München (TUM). The program will actively assist the candidate in achieving a doctoral degree within the scheduled time of three years. She/he will obtain an interdisciplinary training and a solid knowledge of adjacent research fields. The candidate will work together with other PhD students from different fields in a highly interdisciplinary work environment. Guest research stays for up to three months at renowned international partner universities are part of the program as well. The payment and the conditions of employment follow the specifications of IGSSE projects at the TUM.

    Application details:
    As part of the Excellence Initiative of the German federal and state governments, TUM has been pursuing the strategic goal of substantially increasing the diversity of its faculty. The TUM is an equal opportunity employer. TUM aims to increase the proportion of women and therefore particularly welcomes applications by women.
    Applications should include curriculum vitae, certificates and transcript of MA/Diploma or equivalent degree, summary of the previous work, letter of motivation, proof of fluency in English and names of two references. Please send your application within one pdf-document.

    Kontakt: Dr. rer. nat. Christine Rümenapp (Project team leader), Phone: [IMG]resource://skype_ff_extension-at-jetpack/skype_ff_extension/data/call_skype_logo.png[/IMG]+49-89-289-10816, Email: ruemenapp@tum.de

  4. #64
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    پیش فرض پاسخ : موقعیت‌های خالی در دانشگاه‌های خارج از کشور

    PhD position
    .A Microstructure based Multiscale Computational Framework for Sheet Metal Forming

    Coventional sheet metal forming processes involve high cost and lead times because of design and manufacturing of product specific tooling for new materials and parts. In some cases macro scale models are used to perform virtual experiments, however such macro scale models are not based on realistic physical mechanisms and thus predictions aren’t accurate.
    The proposed Phd work is a part of the bigger project whose aim is to develop a physics based multiscale computational framework which accounts for real life physical mechanisms observed during experiments.
    Recent experimental studies performed by the proposer [1-4] and others have shown that high strength aerospace alloys show extensive twinning and lattice rotation during deformation while some of the alloys show deformation induced phase transformation causing a change in deformation behaviour. Things get more complicated in the presence of microvoids, cracks and foreign particles as stress concentrations around these changes the evolution of phase transformation and vice versa.

    Therefore, it is necessary to develop a realistic multiscale computational framework which can take into account the actual microstructural data from experiments and predict the microstructure evolution along with crack initiation and propagation in such materials during sheet metal forming process.

    This PhD work will be aimed at developing a multiscale computational framework to account for the effect of microvoid growth on phase transformation and transformation induced plasticity and vice versa during sheet metal forming processes.
    This work will be performed in close collaboration with Advanced Forming Research Centre (AFRC) at University of Strathclyde, UK; University of Stuttgart, Germany; and University of Aberdeen.

    Applicants must hold, or expect to receive, a first or upper second class honours degree (or equivalent) Masters in Mechanical/Manufacturing Engineering or Materials Science. Knowledge of CAD and FE based modelling and Forming Processes and Materials Characterisation.
    Funding Notes:

    This project is advertised in relation to the research areas of the discipline of Engineering. The project is eligible for Elphinstone Funding which will pay Tuition Fees (only). To be considered you MUST have a First Class Degree or equivalent, 2.1 Honours Degree or Equivalent, plus MSc at Merit/Distinction level in a relevant subject. Please ensure you note Elphinstone funding on the application form and project title/supervisor. Applications should be received and complete by 31 March 2015. Applications received after this date will be considered for the project but no funding will be attached to any offer made.


    References:

    A. Siddiq, T. El Sayed, Ultrasonics, 52, 521-529, 2012. (In the list of Elsevier top 25 hottest articles)
    [2]A. Siddiq, T. El Sayed, Computational Materials Science, 51, 241-251, 2012.
    [3] A. Siddiq, R. Arciniega, T. El Sayed, 49, 185-195, 2012.
    [4] A. Siddiq, E. Ghassemieh, Mechanics of Materials, 40, 982-1000, 2008. (In the list of Elsevier top 25 hottest articles, in the list of most cited article published in mechanics of materials since 2008)



    Formal applications can be completed online: http://www.abdn.ac.uk/postgraduate/apply. You should apply for Degree of Doctor of Philosophy in Engineering, to ensure that your application is passed to the correct College for processing. Please ensure that you quote the project title and supervisor on the application form.

    Informal inquiries can be made to Dr A Siddiq (amir.siddiq@abdn.ac.uk) with a copy of your curriculum vitae and cover letter. All general enquiries should be directed to the Graduate School Admissions Unit (cpsgrad@abdn.ac.uk).

  5. #65
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    Apr 2012
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    پیش فرض پاسخ : موقعیت‌های خالی در دانشگاه‌های خارج از کشور

    PhD position
    .Hydro- and sediment dynamics under sea waves

    Understanding sediment interactions with waves and predicting net sediment transport rates is critically important in the context of coastal engineering. However, wide variability in the flow and sediment conditions and complexity in the underlying processes, mean that current understanding is far from complete and accurate prediction of sediment dynamics and net transport rates is still a major challenge. The PhD project will build on substantial previous research at the University of Aberdeen aimed at better understanding of fundamental sediment transport processes and developing better predictive models for use in engineering practice. New research directions at Aberdeen in this area include the mechanics and transport of gravels under waves, the transport of foreign bodies within a mobile sand bed under waves and the effects of vegetation on sand transport under waves. The PhD research will focus on one of these topics.

    Comprising experimental and analytical study, the research will be based on detailed, process-focused measurements of hydro- and sediment dynamics in experiments conducted in the Aberdeen Oscillatory Flow Tunnel (AOFT). This is a large facility specifically designed to study wave-driven sediment processes under full-scale conditions.


    The successful candidate should have, or expect to have an Honours Degree at 2.1 or above (or equivalent) in civil or mechanical engineering; other relevant physical science. An excellent first degree in engineering, or related discipline that includes fluid mechanics, will provide the essential knowledge.

    Prior knowledge of the following would be beneficial but is not essential: sea wave mechanics; sediment transport mechanics; laboratory measurements in fluid mechanics.

    Funding Notes:

    This project is advertised in relation to the research areas of the discipline of Engineering. The project is eligible for Elphinstone Funding which will pay Tuition Fees (only). To be considered you MUST have a First Class Degree or equivalent, 2.1 Honours Degree or Equivalent, plus MSc at Merit/Distinction level in a relevant subject. Please ensure you note Elphinstone funding on the application form and project title/supervisor. Applications should be received and complete by 31 March 2015. Applications received after this date will be considered for the project but no funding will be attached to any offer made.





    References:

    Aberdeen has a strong research track record in hydro- and sediment dynamics in oscillatory flows and under waves. Example publications:

    1. O’Donoghue,T. and Wright, S. (2004), Flow tunnel measurements of velocities and sand flux in oscillatory sheet flow for well-sorted and graded sands, Coastal Engineering, 51, 1163-1184.
    2. O’Donoghue,T. and Wright, S. (2004), Concentrations in oscillatory sheet flow for well sorted and graded sands, Coastal Engineering, 50, 117-138.
    3. Van der A, D., O’Donoghue, T. and Ribberink, J.S. (2010). Measurements of sheet flow transport in acceleration-skewed oscillatory flow and comparison with practical formulations, Coastal Engineering, 57 (3), 331-342.
    4. Van der A, D., O’Donoghue, T., Davies, A.G. and J.S. Ribberink (2011). Experimental Study of Turbulent Boundary Layer in Acceleration-Skewed Oscillatory Flow. Journal of Fluid Mechanics, vol 684, 251-283.
    5. Van der A, D., Ribberink, J.S., van der Werf, J.J., O’Donoghue, T., Buijsrogge, R.H., Kranenburg, W.M. (2013). Practical sand transport formula for non-breaking waves and currents. Coastal Engineering, 76, 26-42.


    Application Process:

    Formal applications can be completed online: http://www.abdn.ac.uk/postgraduate/apply. You should apply for Degree of Doctor of Philosophy in Engineering, to ensure that your application is passed to the correct College for processing. Please ensure that you quote the project title and supervisor on the application form.

    Informal inquiries can be made to Professor T O'Donoghue (t.odonoghue@abdn.ac.uk) with a copy of your curriculum vitae and cover letter. All general enquiries should be directed to the Graduate School Admissions Unit (cpsgrad@abdn.ac.uk).

  6. #66
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    پیش فرض پاسخ : موقعیت‌های خالی در دانشگاه‌های خارج از کشور

    .Efficient simulation of the effect of mixing and flow condition on product crystal qualities in a continuous crystallizer using coupled CFD-PBE approach

    The majority of the active pharmaceutical ingredients (APIs) used in the pharmaceutical industries are crystals of organic molecules. In these industries, crystallization is widely used as the principal method of separation and purification. As opposed to the traditionally used batch mode, the interest is continuous crystallization has increased significantly in recent years due to several benefits such as consistency of product quality and reduced manufacturing cost by improving asset utilization. While designing continuous crystallizer at the industrial scale, e.g., plug flow crystallizer (PFC), the effect of imperfect mixing and flow condition has to be considered since they can affect the product crystal qualities as well as plant operation significantly. For example, imperfect mixing can leads to local variation in supersaturation within the crystallizer that may results in excessive fine crystals. In order to take this variation into account while modelling continuous crystallization, this work aims at combining computational fluid dynamics (CFD) describing flow field with population balance equation (PBE) describing changes in the crystal phase. The solution of the governing equations for coupled CFD-PBE is computationally expensive. Thus, in most of the previous works that consider coupled CFD-PBE approach, the PBE is solved only in terms of moments of the crystal size distribution (CSD).

    In this work, efficient solution techniques such as lattice Boltzmann method (LBM) will be used for solving the coupled CFD-PBE model equations, where the solution of the PBE in terms of CSD will be explored. LBM is a simulation technique that takes a bottom up approach by solving simplified governing equations at the mesoscopic level which is equivalent to solving the complicated nonlinear governing equations at the macroscopic level. These results will be very useful in designing industrial continuous crystallizer with particular application to pharmaceutical and chemical sectors.


    The successful candidate should have, or expect to have an Honours Degree at 2.1 or above (or equivalent) in Chemical Engineering or similar discipline. Knowledge or interest in process design, simulation and experience in computer programming (C/C++) are highly expected
    Funding Notes:

    This project is advertised in relation to the research areas of the discipline of Engineering. The project is eligible for Elphinstone Funding which will pay Tuition Fees (only). To be considered you MUST have a First Class Degree or equivalent, 2.1 Honours Degree or Equivalent, plus MSc at Merit/Distinction level in a relevant subject. Please ensure you note Elphinstone funding on the application form and project title/supervisor. Applications should be received and complete by 31 March 2015. Applications received after this date will be considered for the project but no funding will be attached to any offer made.


    References:

    Application Process:

    Formal applications can be completed online: http://www.abdn.ac.uk/postgraduate/apply. You should apply for Degree of Doctor of Philosophy in Engineering, to ensure that your application is passed to the correct College for processing. Please ensure that you quote the project title and supervisor on the application form.

    Informal inquiries can be made to Dr A Majumder (a.majumder@abdn.ac.uk) with a copy of your curriculum vitae and cover letter. All general enquiries should be directed to the Graduate School Admissions Unit (cpsgrad@abdn.ac.uk).

  7. #67
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    پیش فرض پاسخ : موقعیت‌های خالی در دانشگاه‌های خارج از کشور

    .Discrete particle simulation of drill-bit formation interaction for dynamical modelling of drilling

    Understanding the dynamics of drillstrings in an oilwell drilling environment is important because it can impact the performance and safety of the drilling project. Various modes of dynamical vibrations of the drill-bit have been modelled such as stick-slip, which is a severe form of torsional vibration, whirling and bit-bounce, which is an axial vibration.

    These vibration modes can be controlled with an appropriate actuation force, with a resulting increase in the performance of the drilling operation. Axial vibrations have even been shown to increase the rate of penetration due to propagation of micro-fractures in the formation within the axis of the wellbore. These micro-fractures will in turn alter the effective mechanical properties of the formation and therefore the vibration modes. This project aims to use discrete particle simulations to model the fracture mechanisms within the formation, and the effect these have on both ROP and formation strength. These models will then be coupled to dynamical simulations of the drill-bit and drillstring in order to improve our understanding of the behaviour of the whole drilling operation.

    The first stage of the project will be to develop and validate formation models using a discrete force event driven particle approach, which will be based on DynamO (http://dynamomd.org/). Strong programming skills will be essential at this stage.

    The second stage will be to incorporate drill-bit formation interaction into existing low dimensional dynamical drilling models, in order to understand the effect of formation damage on the dynamical response of the drilling equipment. This will involve the study of nonsmooth dynamics, and branch of nonlinear dynamics, and will require a strong mathematical background.

    The successful candidate should have, or expect to have an Honours Degree in Engineering, Physics or other numerate discipline at 2.1 or above (or equivalent). Strong analytical and computer programming skills are essential and some knowledge of dynamics and solid mechanics would be advantageous.

    Funding Notes:

    This project is advertised in relation to the research areas of the discipline of Engineering. The project is eligible for Elphinstone Funding which will pay Tuition Fees (only). To be considered you MUST have a First Class Degree or equivalent, 2.1 Honours Degree or Equivalent, plus MSc at Merit/Distinction level in a relevant subject. Please ensure you note Elphinstone funding on the application form and project title/supervisor. Applications should be received and complete by 31 March 2015. Applications received after this date will be considered for the project but no funding will be attached to any offer made.



    References:

    Application Process:

    Formal applications can be completed online: http://www.abdn.ac.uk/postgraduate/apply. You should apply for Degree of Doctor of Philosophy in Engineering, to ensure that your application is passed to the correct College for processing. Please ensure that you quote the project title and supervisor on the application form.

    Informal inquiries can be made to Dr J Ing (j.ing@abdn.ac.uk) with a copy of your curriculum vitae and cover letter. All general enquiries should be directed to the Graduate School Admissions Unit (cpsgrad@abdn.ac.uk).

  8. #68
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    پیش فرض پاسخ : موقعیت‌های خالی در دانشگاه‌های خارج از کشور

    .Assessment of condition, safety and reliability of wind energy infrastructure systems using structural health monitoring

    Application Deadline: Tuesday, March 31, 2015


    Wind turbines are exposed to frequent structural damage increasing the cost of wind energy generation. To drive these costs down, this project will develop new automated methods for detection and severity assessment of structural damage to wind turbines by examining vibration responses such as accelerations and strains measured by sensors attached to the structure. Dynamic responses will be used to detect differences between healthy and damage structural components (foundations, tower and rotor blades). Damage severity will be assessed using calibration of numerical structural models based on measured responses. Data for the research will come from computer simulations under different damage scenarios and experimental validation will be undertaken using physical models of wind turbine tower and rotor blades.

    As the off-shore wind turbines are relatively new types of structures, there is generally dearth of knowledge about their long-term structural reliability and performance, and indeed there are growing concerns in the industry that the existing structures will struggle to reach their design life-span of 25 years. There is thus a strong interest from the industry in coming up with design and maintenance practices that would maximize the reliability and longevity of wind turbines in a cost efficient way. Another sub-objective of this project is to develop a methodology for optimization of the trades-off between maximizing the structural reliability and minimizing the costs related to initial construction, inspections, monitoring and maintenance throughout the life-cycle of wind turbines and entire wind farms. In simple terms, the methodology will answer the question: Should we build more expensive structures or cheaper ones but pay more for inspection and maintenance?

    There is also generally dearth of data and understanding as to how large structural systems, such as modern wind turbines, perform in their in-situ environment and such knowledge can only be gained via monitoring actual loadings and responses. This study will also consider monitoring of a wind turbine dynamic structural responses (accelerations, displacement and strains), system identification, and development of models to quantitatively assess performance and reliability.

    This industry-relevant research will be supervised by the academics associated with the University of Aberdeen Lloyd’s Register Foundation Centre of Safety and Reliability Engineering and will pave the way for industry uptake of the automated damage monitoring technologies and optimal state-of-the-art design and maintenance practices to increase wind turbine safety and reliability and reducing their costs.

    The successful candidate should have, or expect to have an Honours Degree in Civil (Structural), Mechanical, Aerospace, Mechatronics Engineering, Physics, Mathematical Physics at 2.1 or above (or equivalent).

    Candidates must have a strong academic background in engineering, applied science or applied mathematics. Enthusiasm, can-do attitude and strong skills in structural mechanics, dynamics and mathematical and computer modelling (or strong motivation and clear potential to learn these), and willingness to engage in experimental work are a must. Preference will be given to applicants who can demonstrate both a clear potential for research excellence and their suitability for research project described above.
    Funding Notes:

    This project is advertised in relation to the research areas of the discipline of Engineering. The project is eligible for Elphinstone Funding which will pay Tuition Fees (only). To be considered you MUST have a First Class Degree or equivalent, 2.1 Honours Degree or Equivalent, plus MSc at Merit/Distinction level in a relevant subject. Please ensure you note Elphinstone funding on the application form and project title/supervisor. Applications should be received and complete by 31 March 2015. Applications received after this date will be considered for the project but no funding will be attached to any offer made.



    References:

    Formal applications can be completed online: http://www.abdn.ac.uk/postgraduate/apply. You should apply for Degree of Doctor of Philosophy in Engineering, to ensure that your application is passed to the correct College for processing. Please ensure that you quote the project title and supervisor on the application form.

    Informal enquiries can be made to, Dr P Omenzetter, University of Aberdeen with a copy of your current CV and a covering letter detailing your suitability for the project. Email: (piotr.omenzetter@abdn.ac.uk). All general enquiries should be directed to the Graduate School Admissions Unit (cpsgrad@abdn.ac.uk).

  9. #69
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    پیش فرض پاسخ : موقعیت‌های خالی در دانشگاه‌های خارج از کشور

    .Modelling and Optimisation of Downhole Drilling

    Application Deadline: Tuesday, March 31, 2015


    Concrete is a very important construction material with a wide use globally largely as a consequence of the ubiquity of its raw materials. Although it is frequently modelled assuming that its mechanical response is linear elastic, it is recognised that concrete is not a Hookean elastic material and that strain softening occurs in practice. Several models have been developed to simulate the behaviour of concrete and some of these have been incorporated into commercially available finite element packages.

    The successful candidate will concentrate on extending and developing a model that has been developed by the team at the University of Aberdeen to take account of the influence of the drying of the cement paste as it hardens on the subsequent material behaviour and its response to applied loads. The results will be validated against published experimental data and finite element analysis using commercially available software. Some experimental work may be required.

    Applicants must hold, or expect to receive, a first or upper second class honours degree (or equivalent) in Applied mathematics, civil, structural or mechanical engineering.

    The successful candidate must have a good mathematical background, competence in computer programming and some experience of Matlab, or a similar package.

    Funding Notes:

    This project is advertised in relation to the research areas of the discipline of Engineering. The project is eligible for Elphinstone Funding which will pay Tuition Fees (only). To be considered you MUST have a First Class Degree or equivalent, 2.1 Honours Degree or Equivalent, plus MSc at Merit/Distinction level in a relevant subject. Please ensure you note Elphinstone funding on the application form and project title/supervisor. Applications should be received and complete by 31 March 2015. Applications received after this date will be considered for the project but no funding will be attached to any offer made.



    References:

    Application Process:

    Formal applications can be completed online: http://www.abdn.ac.uk/postgraduate/apply. You should apply for Degree of Doctor of Philosophy in Engineering, to ensure that your application is passed to the correct College for processing. Please ensure that you quote the project title and supervisor on the application form.

    Informal inquiries can be made to Dr C Sands, (c.sands@abdn.ac.uk) with a copy of your curriculum vitae and cover letter.

  10. #70
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    Apr 2012
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    پیش فرض پاسخ : موقعیت‌های خالی در دانشگاه‌های خارج از کشور

    .LNG sloshing and Leidenfrost droplet dynamics – modelling gas-cushioned liquid-solid impacts with phase change

    The impact of liquefied natural gas (LNG) with the walls of its containing tank and the impact of droplets with very hot surfaces are two examples of liquid-solid impacts in which the liquid may be close to thermodynamic equilibrium with the surrounding gas/vapour. In addition to the usual violent fluid flows associated with liquid-solid impacts, significant phase change is possible in these cases. This project will seek to quantify this phase change and assess what effect it has on impact dynamics. In impacts without phase change, pre-impact gas cushioning in a narrow gas film separating the liquid and the solid has been observed. This leads to the formation of entrained pockets of gas, which have been modelled (see references).

    In LNG sloshing, gas film pressure increases can lead to vapour condensation and reduced entrained gas pocket volumes. This effect is not currently included in LNG sloshing impact models, and consequently incorporating this phenomenon will improve the prediction of loads on the container wall and inform future LNG tank design.

    Droplet impacts with heated surfaces are widely used as a method of reducing the temperature of very hot surfaces. Energy is transferred from the heated surface to individual droplets, leading to droplet evaporating and a net reduction in surface temperature. Evaporation from the droplet into the gas film enhances the pre-existing cushioning process and ultimately once the surface reaches the Leidenfrost temperature, the vapour cushion stabilizes and the droplet skates upon this rather than impacting the solid.

    Using computational and analytical fluid dynamics, and mathematical modelling, this project will extend existing pre-impact gas-cushioning models by incorporating liquid boiling and condensation from the gas film. The novel models developed in this project will inform the thermofluid dynamics of the liquid-solid impacts with phase change and improve understanding of the problems described.


    The successful candidate should have, or expect to have an Honours Degree at 2.1 or above (or equivalent) in Engineering, Applied Mathematics, Physics or a related discipline. Fluid dynamics, thermodynamics. Experience of computational methods would be beneficial.
    Funding Notes:

    This project is advertised in relation to the research areas of the discipline of Engineering. The project is eligible for Elphinstone Funding which will pay Tuition Fees (only). To be considered you MUST have a First Class Degree or equivalent, 2.1 Honours Degree or Equivalent, plus MSc at Merit/Distinction level in a relevant subject. Please ensure you note Elphinstone funding on the application form and project title/supervisor. Applications should be received and complete by 31 March 2015. Applications received after this date will be considered for the project but no funding will be attached to any offer made.





    References:

    Hicks, P. D. & Purvis, R. Air cushioning and bubble entrapment in three-dimensional droplet impacts. J. Fluid Mech., 2010, 649, 135-163.

    Hicks, P. D.; Ermanyuk, E. V.; Gavrilov, N. V. & Purvis, R. Air trapping at impact of a rigid sphere onto a liquid. J. Fluid Mech., 2012, 695, 310-320.

    Application Process:

    Formal applications can be completed online: http://www.abdn.ac.uk/postgraduate/apply. You should apply for Degree of Doctor of Philosophy in Engineering, to ensure that your application is passed to the correct College for processing. Please ensure that you quote the project title and supervisor on the application form.

    Informal inquiries can be made to Dr P Hicks (p.hicks@abdn.ac.uk) with a copy of your curriculum vitae and cover letter.

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