Wankelstraße 3, 70563 Stuttgart
Effect of Equilibrium and Non-Equilibrium Wall Models in LES of Turbulent Wall-Bounded Flows
Bachelor/Master Thesis (m/w/d)
Background
Scale-resolving numerical simulations of turbulent wall flows require a very fine resolution of the boundary layer and are therefore associated with high computational costs. Wall-modeled large-eddy simulation (WMLES) reduces this cost compared to classical LES by modeling the near-wall region. In addition to classical equilibrium wall models, non-equilibrium approaches such as integral wall-modeled LES (IWMLES) have been developed in recent years. While equilibrium models are limited to specific flow regimes, non-equilibrium approaches like IWMLES offer the potential for more general applicability.
Project Description
Within the scope of this work, the implementation of an integral wall-modeled LES (IWMLES) approach in the discontinuous Galerkin spectral element solver FLEXI will be further developed and validated. The primary objective is to assess the performance of the IWMLES and to systematically identify flow regimes in which non-equilibrium effects become significant, thereby establishing when non-equilibrium wall models are necessary and when equilibrium models provide sufficient accuracy.
The results will be systematically documented and evaluated in the final thesis.
Your Profile
- Studies in engineering, mathematics, physics, or computer science
- Programming skills (preferably in Fortran 90) and experience with the Linux terminal are desirable
- Knowledge of, or strong interest in, numerical methods, CFD, and turbulent flow physics
Application
Please send your complete application to: andreas.wanninger@iag.uni-stuttgart.de
Start: Flexible
Andreas Wanninger
Institut für Aerodynamik und Gasdynamik
E-Mail: andreas.wanninger@iag.uni-stuttgart.de
Tel.: +49 711 685 60219