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Published on: February 3, 2014
Wall-Modeled Large-Eddy Simulation for Complex Turbulent Flows
Sanjeeb T Bose1,2, George Ilhwan Park3,4
1Cascade Technologies, Inc., Palo Alto, California 94303.
None:
Large-eddy simulation (LES) has proven to be a computationally tractable approach to simulate unsteady turbulent flows. However, prohibitive resolution requirements induced by near-wall eddies in high-Reynolds number boundary layers necessitate the use of wall models or approximate wall boundary conditions. We review recent investigations in wall-modeled LES, including the development of novel approximate boundary conditions and the application of wall models to complex flows (e.g., boundary-layer separation, shock/boundary-layer interactions, transition). We also assess the validity of underlying assumptions in wall-model derivations to elucidate the accuracy of these investigations, and offer suggestions for future studies.
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