The generation of geometric multigrid sequences in the Rolls-Royce Hydra system is currently performed in a serial fashion per component. These geometric multigrids are necessary for the CFD solver to achieve fast and robust convergence. They are effectively used as a preconditioner for the systems of equations that have to be solved. Given the increase in compute power and memory in recent years, the mesh sizes that are computed for turbomachinery applications have grown significantly, such that this serial preprocessing step now is a bottleneck which has to be removed. Thus a parallel strategy to create multigrids which allow the efficient solution of the CFD systems of equations has to be devised.
Secondly, there exists the demand for steady and unsteady CFD solutions with increased accuracy to allow the better prediction of small changes of relevant output quantities like efficiency and fuel consumption. This can be achieved by adapting and refining the mesh on the fly in the solver during the CFD solution to better capture the flow features of interest. Since the mesh refinement is closely coupled to the multigrid method used for the CFD solution, it is necessary to develop a strategy for efficient parallel multigrid generation and refinement in a holistic manner. When coupled with an adjoint-based refinement indicator it will also allow the goal-oriented refinement and provide an estimate of the size of the remaining error.
Research Group: Modelling and Simulation in Engineering Systems
QMUL Research Studentship Details
◦Available to Home/EU/International Applicants.
◦Full Time programme only
◦Applicant required to start in Sept/Oct 2016.
◦The studentship arrangement will cover tuition fees and provide an annual stipend (£16,057 in 2015/16) for up to three years.
◦The minimum requirement for this studentship opportunity is a good Honours degree (minimum 2(i) honours or equivalent) or MSc/MRes in a relevant discipline.
◦If English is not your first language then you will require a valid English certificate equivalent to IELTS 6.5+ overall with a minimum score of 5.5 in all sections (Reading, Listening, Writing, Speaking).
◦International applicants should refer to the following website at http://www.qmul.ac.uk/international/index.html
Supervisor Contact Details:
For informal enquiries about this position, please contact Dr Jens-Dominik Mueller
Tel: 020 7882 5421
E-mail: [email protected]
To apply for this studentship and for entry on either the Mechanical or Aerospace Engineering programmes (Full Time, Semester 1 start) please follow the apply online link at:
Further Guidance available via: http://www.qmul.ac.uk/postgraduate/applyresearchdegrees/index.html
Please be sure to include a reference to ‘2016 SEMS QMRS JM’ to associate your application with this studentship opportunity.
Deadline for applications: 29/02/2016