Incompressible laminar flow over a three-dimensional rectangular cavity |
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Authors: | H. Yao R. K. Cooper S. R. Raghunathan |
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Affiliation: | (1) School of Aeronautical Engineering, The Queen’s University of Belfast, BT7 1NN Belfast, UK |
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Abstract: | This paper investigates unsteady incompressible flow over cavities. Previous research in incompressible cavity-flow has included flow inside and past a 2-dimensional cavity, and flow inside a 3-dimensional cavity, driven by a moving lid. The present research is focused on incompressible flow past a 3-dimensional open shallow cavity. This involves the complex interaction between the external flow and the re-circulating flow within the cavity. In particular, computation was performed on a 3-dimensional shallow rectangular cavity with a laminar boundary layer at the cavity and a Reynolds number of 5,000 and 10,000, respectively. A CFD approach, based on the unsteady Navier-Stokes equations for 3-dimensional incompressible flow, was used in the study. Typical results of the computation are presented. These results reveal the highly unsteady and complex vortical structures at high Reynolds numbers. |
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Keywords: | three-dimensional cavity incompressible laminar flow Navier-Stokes equations. |
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