22nd Congress of International Council of the Aeronautical Sciences, Harrogate, UK, 28 August - 1st September, 2000
Paper ICAS 2000-2.3.R1

SIMULATION OF 3-DIMENSIONAL INCOMPRESSIBLE CAVITY FLOWS

H. Yao, R. Cooper, R. Raghunathan
The Queen’s University of Belfast, UK

Keywords: three-dimensional cavity, incompressible flow, navier-stokes equations

This paper investigates incompressible, unsteady flow over 3-dimensional cavities. Previous research in incompressible flow with cavities has included flow inside and over a 2- dimensional cavity, and flow inside a 3- dimensional cavity, driven by a moving lid. The present research is focused on incompressible flow over 3-dimensional open shallow cavities. This involves the complex interaction between the external flow and the re-circulating flow inside the cavity. A computational fluid dynamics approach, based on the unsteady Navier-Stokes equations, is used in the study. Typical results of computation with the Reynolds number equaling 3000 are presented. Unsteady vortical structures and shear-layer oscillations are observed within and around the cavities.

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