A Large-Eddy Simulation of the Shear-Driven Cavity Flow
NAVAL UNDERSEA WARFARE CENTER DIV NEWPORT RI
Pagination or Media Count:
The three-dimensional shear-driven cavity flow is numerically investigated at Reynolds numbers of 5000 and 10,000. This investigation focuses on the unsteadiness and turbulent characteristics of the flow. At the moderate Reynods number Re 5000 where the cavity flow is fully laminar, a direct numerical simulation DNS is used at the higher Reynolds number Re 10,000, large-eddy simulation LES methodology is used to predict the cavity flow. Establishing a suitable form for the subgrid scale SGS turbulence model in this complex flow is guided by the DNS results at Re 5000. Additionally, the SGS model is verified against DNS results at Re 7500, where the cavity flow is known through experimentation to be locally transitional. The LES results verify the published experimental evidence, as well as introduce new flow features within the cavity.
- Fluid Mechanics