Large Eddy Simulations of Flows with Moving Boundaries
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abstract
Many important engineering and biological flows involve solid boundaries moving within a fluid at high Reynolds numbers, e.g., pumps, fish swimming, wind/hydrokinetic turbines. Simulating such flows requires dealing with moving boundaries and turbulence, which are two of the main challenges facing numerical methods today in computational fluid dynamics (CFD). In this chapter, the numerical methods that deal with moving boundaries in turbulent flows are reviewed and the recent advances are summarized. Some of the state-of-the-art simulations, their results, and the insights gained about the flow physics are discussed. Finally, some of the future developments, such as developing wall models over moving boundaries, required to advance large eddy simulations (LES) with moving boundaries are discussed.