Abstract
The chapter presents a new Navier-Stokes solver for laminar and turbulent flow. It focuses on large-eddy simulation (LES) of turbulent flows in complex geometries. For discretization, a streamline-upwind/Petrov-Galerkin (SUPG) finite element method is employed on an unstructured grid of tetrahedral cells. Temporal integration is carried out with an explicit Runge-Kutta scheme. To reduce computational time, parallelization based on grid partitioning is used, which is an appropriate technique for speeding up calculations. The newly developed solver is proved to be a valuable tool for computing laminar and turbulent flows in complex geometries. The qualitative and quantitative agreement with experiments and DNS data is good. Due to sustained optimization, the parallel efficiency is better than 96% even for large numbers of processors.
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