AAs the oil and gas industry shifts its attention to deepwater and ultra-deepwater fields, pipelines with new structural configurations such as pipe-in-pipe (PIP) are required to meet the simultaneous demands for thermal insulation, mechanical integrity and fluid transportation. As a light-weight alternative to traditional PIP systems, in which the core materials are used only for thermal insulation purposes, sandwich pipes are being introduced, which combine structural performance with thermal insulation in their design. Similar to other sandwich structures, they have advantages of improved strength-to-weight and stiffness-to-weight ratios and characteristics that can be tailored to satisfy specific requirements. The proposed project aims to investigate novel joint configurations for sandwich pipes and with the view to optimise joint parameters and performance of the joint for high temperature high pressure conditions.
The successful candidate should have, or expect to have an Honours Degree at 2.1 or above (or equivalent) in applied mathematics, solid mechanics, engineering or materials science. Knowledge of composite materials, solid mechanics and numerical modelling using Matlab and ABAQUS 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 M Kashtalyan (m.kashtalyan@abdn.ac.uk) with a copy of your curriculum vitae and cover letter.
The most common method of secondary oil recovery is waterflooding, whereby water is injected into a reservoir to displace the oil in the reservoir towards production wells. Under ideal conditions, the injected water (flood water) uniformly ‘sweeps’ the oil towards the wells. However, if the viscosity of the reservoir oil is significantly larger than that of the flood water, viscous fingering occurs resulting in poor sweep efficiency.
One approach for mitigating this effect is to use cross-linked polymer solutions as the flood water. These solutions increase in viscosity as they flow through the reservoir, suppressing viscous fingering and, accordingly, enhancing oil recovery. However, the sensitivity of this evolution to mechanical shear associated with flowing through the pores of the reservoir rock is not fully understood.
The aim of this project is to quantify the dependence of oil recovery on the viscoelasticity of cross-linked polymer gel solutions through detailed laboratory experiments and numerical simulations. The key steps are:
(i) Measurement of the viscoelasticity of selected polymer gel solutions over a range of temperatures and polymer concentrations representative of field conditions.
(ii) Assessment of shear stability of cross-linked polymer gel solution in dual porosity/dual permeability rock samples.
(iii) Evaluation of the efficiency of polymer gels in remobilising oil.
These experiments will be complemented by the development of a predictive model for oil recovery from polymer gel injection and the numerical simulation on a generic geological reservoir setting to assess the technical feasibility of the scheme.
The successful candidate should have, or expect to have an Honours Degree at 2.1 or above (or equivalent) in relevant engineering, applied mathematics, or physics discipline. Expertise in fluid mechanics and knowledge of MATLAB will be an advantage. Previous laboratory experience is essential.
Funding Notes:
This project is advertised in relation to the research areas of the discipline of Petroleum 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 Syed (a.syed@abdn.ac.uk) with a copy of your curriculum vitae and cover letter.
In general, three different lasers are used to obtain the RGB wavelengths necessary for colour holography. This research would focus towards development of a pulsed RGB holographic laser from a single ruby laser employing nonlinear Raman conversion and harmonic conversion techniques.
Colour holography is one of the key technologies being considered for 3 dimensional recording and displays. Pulsed lasers for holography require coherence length that matches the maximum field of depth to be recorded; necessary pulse energy to illuminate the recording volume; good spatial coherence, preferably a TEM00 mode; pulse durations in the order of nanoseconds; and a good combination of RGB (red, green, blue) wavelengths to cover almost all colours which are perceptible by human eye (CIE chart). An RGB laser fulfilling these criteria is essential for recording the master holograms.
The intention of this research is to develop a RGB holographic laser based on a single ruby laser with the following parameters: wavelengths: (694 nm, 514 nm, 488 nm) or (694 nm, 535 nm, 438 nm); pulse width: 30 ns; coherence length: > 1 m; transverse mode: TEM00.
The RGB laser would be constructed from a 694 nm ruby laser that is available at Aberdeen University. The other two wavelengths can be generated from a combination of Raman wavelength shifting (either in hydrogen, deuterium, or Barium Nitrate) and second harmonic conversions. The two combination of RGB wavelengths (as stated above) would be development to compare which combination yields good chromaticity. The research would generally concentrate on the study of the nonlinear wavelength conversion processes with the aim of optimizing the wavelength conversion efficiencies.
The successful applicant will have a first or upper second class degree (or equivalent) in Electrical/Electronic Engineering, Physics, Mechanical Engineering. Knowledge of Laser and Optics 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:
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 Thanga Thevar, University of Aberdeen with a copy of your current CV and a covering letter detailing your suitability for the project. Email: t.thevar@abdn.ac.uk).
Dambreak-generated surge, post-breaking tsunami in shallow water and bore-driven swash on beaches are examples of environmental flows characterised by the sudden occurrence of high velocity, turbulent and aerated flow. Such flows can have major, often highly destructive impact on the beach or channel over which the flow propagates. Predicting erosion and sediment fluxes for such highly-unsteady flow conditions is very challenging but critically important for the prediction of, for example, beach response to high storm waves or the impact of a dambreak on downstream channel morphology. The PhD project will build on recent research at Aberdeen focused on hydrodynamics and sediment transport in dambreak-generated swash on beaches. The research will comprise experimental and numerical study. Its main focus will be on the sediment transport aspects, using detailed process-focused laboratory experiments to inform the development of better predictive models. The experiments will employ the excellent facilities and measurement capability within the Fluid Mechanics Laboratory at the University of Aberdeen.
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: sediment transport mechanics; shallow water flow modelling; 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:
Related publications from Aberdeen include:
Related publications from Aberdeen include:
1. Barnes, M.P., O’Donoghue, T., Alsina, J. and Baldock, T.E. (2009). Direct bed shear stress measurements in bore-driven swash, Coastal Engineering, 56, 853-867.
2. O’Donoghue, T., Pokrajac, D and Hondebrink, L.J. (2010). Laboratory and numerical study of dambreak-generated swash on impermeable slopes, Coastal Engineering, 57 (5), 513-530
3. Kikkert, G., O’Donoghue, T., Pokrajac, D. and N.Dodd (2012). Experimental study of bore-driven swash hydrodynamics on impermeable rough slopes, Coastal Engineering, 60 (1), 149-166.
4. Kikkert, G., Pokrajac, D., O’Donoghue, T. and K. Steenhauer (2013). Experimental study of bore-driven swash hydrodynamics on permeable rough slopes. Coastal Engineering, 79, 42-56.
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.
Droplet interactions with porous surfaces play a crucial role in many important physical processes including the spraying of plant leaves with pesticides, the infiltration of rain and surface water into soil and the migration of oil in doubly permeable porous media, while a greater understanding of these processes will potentially lead to improved strategies for remediation for chemical contaminants and oil spills, and also flood mitigation.
This project will develop theoretical and numerical models linking the evolution of a sessile droplet on a porous surface with subsurface flow dynamics of liquid from the droplet. A Stokes flow boundary element description of the free surface of a droplet initially resting on a porous surface will be coupled to flow models of the partially and fully saturated regions within the porous media beneath. The novel use of a Stokes flow boundary element method in this coupled configuration will enable the free-surface evolution to be calculated for a wide range of initial contact angles corresponding to both wetting and non-wetting fluids. The coupled dynamics will inform the relationship between different subsurface fluid flow models, relative permeabilities, and the evolution in droplet shape as it is absorbed. The inverse problem of determining properties of the porous medium from the droplet behaviour will also be considered, with the aim of determining whether readily measured droplet properties on the surface can by use as proxies for sub-surface flow characteristics.
In the first year of the PhD, numerical methods will be developed for idealized two-dimensional geometries. In later years these methods will be extended to axisymmetric and three-dimensional cases. The possibility to experimentally validate the modelling predictions may be available.
The successful candidate should have, or expect to have an Honours Degree at 2.1 or above (or equivalent) in Engineering, Applied Mathematics, Physics, Computer Science or Chemistry. Knowledge of Fluid dynamics and experience of computational methods and continuum modelling is also 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:
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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The fundamental understanding of various nonlinear phenomena producing bifurcations and complex behaviour has reached a critical mass and now is the time to develop a systematic approach to engineering design.
The basic philosophy of this approach is to investigate conditions that naturally optimise the behaviour of systems and/or processes in such a way that nonlinear interactions will generate favourable operation. The nonlinearities may arise either as inherent characteristics of the system/process, or may be artificially created for example in a control system. This approach should radically influence the current design, control and exploitation paradigms, in a magnitude of contexts, which because of their incremental nature are often only able to produce marginal improvements in performance of technological systems.
The research programme will be undertaken in the Centre for Applied Dynamics Research at the University of Aberdeen (www.abdn.ac.uk). This is a large interdisciplinary group led by Professor Marian Wiercigroch, who will also supervise the project.
We are looking for exceptional candidates having strong analytical and modelling skills and a good grasp of engineering design. An ideal candidate would have a first class degree in engineering and a MSc in applied mathematics or computing. Candidates having 1st class degree in engineering, applied mathematics or physics are also encouraged to apply.
The successful candidate should have, or expect to have an Honours Degree in Engineering, Physics or Applied Mathematics at 2.1 or above (or equivalent). Knowledge of Mechanical Engineering and Computer Programming. Nonlinear Dynamics for Engineering Design
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.
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 Prof M Wiercigroch (m.wiercigroch@abdn.ac.uk) with a copy of your curriculum vitae and cover letter.
The project will focus on creating the multi-scale three-dimensional models for accurate analytical prediction of the effect of reinforcement with bristled nanowires on the overall performance of the composite material, leading to the optimal usage of very expensive nanomaterials.
The proposed research is aimed at developing a new method for improving properties of structural fibre-reinforced composites by targeted usage of relatively expensive nano-scale additives in order to improve the weakest link in such materials. The project draws on the recently reported idea of the brush-like nano-reinforcement of composite materials. It is suggested to use bristled nanowires for the ultimate purpose of fabricating composites with improved fibre-matrix adhesion and hence the increased shear strength, which is the driving parameter for increasing strength of the entire material.
At the first stage, the project will focus on creating the multi-scale three-dimensional models for accurate analytical prediction of the effect of reinforcement with bristled nanowires on the overall performance of the material.
The second stage will be devoted to the practical applications of the developed method and materials with brush-like nano-reinforcement including manufacturing nanocomposites, testing the developed materials and promoting their usage in industry.
The successful applicant will have a first or upper second class degree in: applied mathematics, solid mechanics, engineering or materials science. Knowledge in numerical modelling using MatLab, C++ or FORTRAN 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 Procedure
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, Professor I Guz, University of Aberdeen with a copy of your current CV and a covering letter detailing your suitability for the project. Email: i.guz@abdn.ac.uk.
Welding is the most economical manufacturing process used to join two or more components permanently. It is regularly used in many sectors such as energy, aero and defence. Welds are often the most critical regions that govern the structural integrity of engineering structures. To increase productivity and efficiency of fabrication, new welding techniques are being developed and evaluated with the objective of reducing residual stresses and improving fatigue performance.
The aim of this project is to develop a realistic multi-scale modelling approach to design welding processes. The model will be first validated against experimental data for the welded sample currently used in the oil and gas industry. For this purpose, experimental work using the existing experimental facilities will be carried out to observe damage accumulation in and around the weld zone and to measure residual stress distribution caused by the welding process. Then, the model will be used to design a welding process which causes less internal stresses, distortions and defects. Experience with finite element analysis (ABAQUS) and programing language (MATLAB and FORTRAN) would be advantageous.
The successful candidate should have, or expect to have an Honours Degree at 2.1 or above (or equivalent) in Mechanical/Manufacturing Engineering or Materials Science. Essential background: programming language and finite element modelling.
Knowledge of: welding processes, numerical analysis, modelling of materials 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:
Kartal, ME., Cuddihy, MA. & Dunne, FPE. (2014). International journal of fatigue, vol 61, no. 46-58.
[2] Kartal, ME. (2013). Proceedings of the Royal Society A: Mathematical, Physical, and Engineering Sciences, vol 469, no. 2159, 20130367.
[3] Kartal, ME., Dunne, FPE. & Wilkinson, AJ. (2012). Acta Materialia, vol 60, no. 13, pp. 5300-5310.
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 M Kartal (mehmet.kartal@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).
Following the success of unconventional hydrocarbon production in the US, interest in shale gas production has been growing in the UK. Shale are low permeability rock with pores ranging in size from nanometers to millimeters. The transport of gas through such rock requires some form of stimulation to introduce or to extend existing fractures, which can vary in aperture from centimeters to metres.
Hydraulic fracturing (“fracking”) is one method for stimulation, and has been successfully applied in the US. However, current models cannot fully predict the fate of chemicals introduced into the shale during fracking. To better design fracking schemes and, ultimately, improve recovery, we need to better understand fluid retention and fluid transport in shale at various spatial scales.
Key questions that will be addressed in the proposed project are:
(a) At the nano-scale: Gas transport through organic kerogens is primarily through molecular diffusion. However, shale matrices contain inorganic material, which may give rise to a different transport mechanism. What are the mechanisms that govern gas transport through a shale matrix?
(b) At the micron-scale: What is the best approach for displacing gas in pores and micron-scale fractures?
(c) At the centimetre and metre scale: What mechanisms govern the displacement of water and different gases in fractures?
(d) Across the scales: How does adsorption-induced swelling influence transport at the different scales?
The ultimate goal of the project is to develop a predictive model that integrates the physics that govern displacement at different scales and to validate it with data generated through a comprehensive set of laboratory experiments.
The successful candidate should have, or expect to have an Honours Degree at 2.1 or above (or equivalent) in relevant engineering, applied mathematics, or physics discipline. Expertise in fluid mechanics and knowledge of MATLAB will be an advantage. Previous laboratory experience is essential.
Funding Notes:
This project is advertised in relation to the research areas of the discipline of Petroleum 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 Syed (a.syed@abdn.ac.uk) with a copy of your curriculum vitae and cover letter.
Most phase transitions in solids can be broadly described in terms of three ferroic properties: ferroelasticity, ferromagnetism and ferroelectricity. Smart materials exhibiting one or more of these properties have widespread applications from medicine to engineering and biotechnology. For instance, magnetic shape-memory alloys that couple ferroelastic and ferromagnetic phase transitions are promising for ecologically friendly refrigerators and energy conversion devices.
A key requirement for these materials to have a reliable functionality is that their properties remain stable under hundreds of millions of cycles across the ferroic phase transitions. Unfortunately, most multiferroics display functional fatigue when heavily cycled and this leads to undesired loss of functionality and even fracture. Fatigue is associated with the emergence of structural defects (e.g. dislocations and microcracks) induced by the solid-to-solid phase transformation itself [1,2]. Recent theoretical efforts to understand the mechanisms responsible for the emergence of defects and their co-evolution with the phase transition suggest that mathematical modelling can make an exceptional contribution towards a new generation of more resilient functional materials [1,2,3].
The main aim of this studentship is to develop a predictive model that can explain the functional fatigue of multiferroics. The framework will ideally cover all the stages of fatigue: from the early emergence of dislocations to the formation of cracks and eventual loss of functionality. The objectives of the project are the following:
1. Devise a prototype model capturing the essential factors responsible for degradation. This framework will considerably extend existing models [1,2,3,4] to include mechanisms leading to the generation of micro-cracks and fracture in the case of high-cycle loading.
2. Use the prototype model developed in objective 1 as a guide to build a large scale numerical model adapted to specific applications.
3. Based on the proposed models, identify possible strategies to enhance the resistance of materials to heavy cycling.
The successful candidate should have, or expect to have an Honours Degree at 2.1 or above (or equivalent) in Physics, Maths, Applied Maths or Engineering. An interest in mathematical modelling of complex systems. Experience in mathematical modelling, computer programming and computational models is not essential but would be beneficial.
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