Abstract
Numerical simulation has been carried out to study the unsteady phenomenon of a buoyancy-induced periodic flow and convection heat transfer in a lid-driven arc-shape cavity. The governing equations in terms of the stream function-vorticity formulation are solved by the finite-volume method coupled with a body-fitted coordinate transformation scheme. In the range of the Reynolds number (Re) from 100 to 2,000 and Grashof number (Gr) up to 5 2 10 7 , the heat transfer characteristics and flow pattern have been predicted. Attention has been focused on the combined effects of the inertial and buoyant forces exerted on the fluid. Results show that only when the inertial and buoyant forces are of approximately equal strength that can the periodic flow pattern be observed. For an inertia-dominant or buoyancy-dominant situation, the periodic flow pattern is not visible.
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