Model 1 will comprise (i) a degenerate fourth-order Cahn–Hilliard type variational inequality, (ii) the linear elasticity equations, and (iii) a degenerate Ginzburg–Landau variational inequality.
Model 2 will include the addition of stochastic effects modelling the battery user behaviour in a statistical sense. The effects will enter the partial differential equations (which then become stochastic partial differential equations) in the form of noise in the boundary, initial or forcing-term data. We will discretise both models using adaptive finite element approximations and the resulting approximations will be analysed and then solved using the adaptive finite element tool box ALBERTA and we will also explore other FEM libraries such as Fenics-Dolfin, Firedrake and Deal.II.
• derive and implement a fully practical finite element approximation of the system;
• analyse the resulting finite element approximation; proving existence, stability bounds, convergence results, error estimates;
• consider a posteriori error analysis and the associated adaptive methodology based on recent advances in this field to derive efficient methods;
• extend the system to include stochastic effects and derive, implement and analyse finite element approximations of this extended stochastic system.
For more information, see:
2) D. Braess (2007). Finite Elements, Cambridge University Press.
You must be
• A UK or European Union (EU) student. Funding restrictions limit availability beyond the EU & UK.
• Have, or expect to have a good UK Bachelor/Master’s degree (or non-UK equivalent qualification) in Mathematics or a closely-related subject.
• Meet the English language requirements (see entry requirements) https://www.sussex.ac.uk/study/phd/degrees/physics-phd
How to apply
Apply through the Sussex on-line postgraduate application system: https://www.sussex.ac.uk/study/phd/degrees/mathematics-phd https://www.sussex.ac.uk/study/phd/apply
In the Other Information/Funding Section state that you are applying for this studentship.
Send an email to Dr Lakkis and Prof Styles to confirm you have applied.
Informal enquiries are welcome and should be directed to
Dr Omar Lakkis ( http://www.sussex.ac.uk/profiles/173323
Prof Vanessa Styles ( http://www.sussex.ac.uk/profiles/16495
Students are encouraged to apply, or at least send an expression of interest, as early as possible. The studentship will be filled as soon as a suitable candidate can be found.
Possible start dates are 23 September 2019, 27 January 2020, or 11 May 2020.