A Large - Eddy Simulation of the Shear - Driven Cavity Flow
نویسندگان
چکیده
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 = 1 0,000), 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. ADMINISTRATIVE INFORMATION This memorandum was prepared under FY93 Project Numbers A40100 and B40100, supported by the Office of Naval Research (L. P. Putrell, Scientific Officer) and Project Number A64962, supported by the Naval Undersea Warfare Center Division Newport's Independent Research Program (K. Lima, Coordinator). The author of this memorandum is located at the Naval Undersea Warfare Center Division, Newport, RI 02841 1708.
منابع مشابه
Investigations of Three- Dimensional Turbulent Cavity Flow Using Large Eddy Simulation Approach
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