PhD Student Position [3 y (50%); degree (MSc, MEng or equivalent)

PhD Student Position [3 y (50%); degree (MSc, MEng or equivalent) in the field of math, scientific computing or CS with knowledge in num methods; exp in C++ programming and parallelisation advantage; basic knowledge in finite element methods; good English skills, both spoken and written; TVöD 13; "Discontinuous Galerkin methods for robust aerodynamic design on efficient computing architectures in aviation"] / German Aerospace Center; Braunschweig

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PhD student position (TVöD 13/2) for research activities in the field of Discontinuous Galerkin flow solver developments

The Institute of Aerodynamics and Flow Technology at the German Aerospace Center (DLR) in Braunschweig, Germany, offers a

PhD student position (TVöD 13/2)

for research activities in the field of Discontinuous Galerkin flow solver developments.

Description of activities:

An internationally recognized junior-scientists group in the C2A2S2E department of the Institute of Aerodynamics and Flow Technology works on the development of the flow solver PADGE for compressible flows based on discontinuous Galerkin (DG) methods. Currently, the focus is on turbulent flows, efficient solver algorithms for discretizations of higher order, on error estimation with respect to aerodynamic force coefficients and on various refinement strategies. Currently, the flow problems are solved with a fully implicit method (Newton or backward Euler with GMRES) based on the PETSc library and an MPI parallelisation.

Connected to the BMBF Project “Discontinuous Galerkin methods for robust aerodynamic design on efficient computing architectures in aviation”, the free scholarship programs candidate will work on the further development of the parallel flow solver in the PADGE code. The tasks of the PhD candidate include

• the development of a multi-p iteration method (p-multigrid) for the solution of higher order DG discretizations of turbulent flows,
• the development of a robust, line-implicit smoothing iteration, and
• their implementation in an MPI- as well as a thread-based parallelisation for a scalable solution on cluster and multicore architectures.

This includes the consideration of special aspects related to local mesh refinement and local variation of the polynomial degree of the finite element basis functions. The developed methods shall be applied to realistic aerodynamic test cases.

Requirement profile:

Favoured qualifications:

• Experience in C++ programming
• Experience in parallelisation
• Good knowledge in finite element methods

Minimum qualifications:

• Degree (MSc, MEng or equivalent) in the field of mathematics, scientific computing or computer science with knowledge in numerical methods
• Good knowlegde in C++ programming
• Basic knowledge in finite element methods

Furthermore, we expect the ability to work in a team and good English skills, both spoken and written. The position is limited to 3 years and could be assigned immediately.

Contact

Dr. Ralf Hartmann

DLR (German Aerospace Center)
Institute of Aerodynamics and Flow Technology
Lilienthalplatz 7
38108 Braunschweig
Germany

Tel.: +49 (5 31) 2 95 – 33 31
E-Mail: Ralf.Hartmann@dlr.de
Internet: www.dlr.de/as