Comparative assessment of grid-spacing-based filter width formulations for Very Large Eddy Simulation

etc15 Tracking Number 133

Presentation:
Session: Wall-bounded flows 5
Room: Room B
Session start: 15:00 Thu 27 Aug 2015

Anastasia Kondratyuk   kondratyuk@fnb.tu-darmstadt.de
Affifliation:
Michael Schäfer   schaefer@fnb.tu-darmstadt.de
Affifliation:
Suad Jakirlic   s.jakirlic@sla.tu-darmstadt.de
Affifliation:

Topics: - Wall bounded flows

Abstract:

When applying hybrid LES/RANS turbulence models the relevant filter width plays a crucial role concerning switching between different operating modes. Presently, the influence of the filter width and the choice of the corresponding criterion within the so-called VLES (Very Large Eddy Simulation) computational framework is investigated. Results obtained by using three eddy-viscosity-based background RANS models in conjunction with different filter-width formulations and two representative wall-bounded flow configurations are presented.