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NUMERICAL STUDY OF MIXED CONVECTION IN LID DRIVEN CAVITY | ||
| AL-TAQANI | ||
| Article 1, Volume 21, Issue 4, 2008, Pages 0-0 | ||
| Abstract | ||
| The current numerical study is conducted to analyze mixed convection heat transfer in lid- driven cavity with a sinusoidal wavy bottom surface. The cavity vertical walls are insulated while the wavy bottom surface is maintained at a uniform temperature higher than the top lid. The governing equation was wrote in terms of stream- vorticity, then it was changed from the differential form to the algebraic by using finite difference method, also body fitted coordinate system was used to change the equation from the cartizian coordinate to the general coordinate. The validity of the numerical code used is ascertained by comparing the results with previously published results. The implications of Richardson number, number of wavy surface undulation and amplitude of the wavy surface on the flow structure and heat transfer characteristics are investigated in detail while the Prandtl number is considered equal to (Pr = 0.71).the results shows that the average Nusselt number increase with an increase in both the amplitude of the wavy surface and Reynolds number. Maximum heat transfer occurs when the wavy surface is designed with two undulations while subjected to low Richardson number | ||
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