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

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...

Influence of numerical and physical parameters on an implicit partitioned fluid-structure solver

sensitivity of the coupled system is a crucial point. The investigation of characteristic values which are influencing the sensitivity, especially the numerical one, and therefrom the derivation of robust parameters for numerical simulations is the main purpose of this contribution. The method which is employed to solve the fluid-structure...

Influence of Numerical Parameters for Large Eddy Simulations of Complex Flow Fields

Large eddy simulation (LES) becomes more and more important for the simulation of practical turbulent flows. The application for technically relevant, complex configurations leads to systems from around 500,000 up to several million degrees of freedom. For a statistical analysis of the turbulent flow field a large number of time steps have to be...