Abstract
This study is devoted to the computational fluid dynamics (CFD) modeling of steady laminar mixed convection flow and heat transfer in lid driven cavity (10 ≤ Re ≤ 1000). The ratio of the height to the width of the cavity is ranged over H/L = 0.5 to 1.5. The governing equations are solved using commercial finite volume package FLUENT to visualize the nature of the flow and estimate the heat transfer inside the cavity for different aspect ratio. The simulation results are presented in terms of average Nusselt number of the hot wall, velocity profile, and temperature contours. It was found that the average Nusselt number inside the cavity is strongly governed by the aspect ratio as well as the Reynolds number. A parametric study is conducted to demonstrate the effect of aspect ratio on the flow and heat transfer characteristics. It is found that heat transfer enhancement was obtained by decreasing the aspect ratio and/or increasing the Reynolds number.
Highlights
One of the major problems in the thermos-fluids is the free and forced convection flow and heat transfer in different aspect of cavity
Investigate the mixed convection heat transfer characteristics of a square cavity over the years, there seems to be lack studies relates the numerical investigation covered the effect of aspect ratio
The present study focuses on flow visualizations on moderate Reynolds number range varying the aspect ratio of driven cavity
Summary
One of the major problems in the thermos-fluids is the free and forced convection flow and heat transfer in different aspect of cavity. Fluid and heat flow behaviors inside lid driven cavities have been the subject of extensive computational and experimental studies over the past years. (2016) Numerical Investigation of a Mixed Convection Flow in a Lid-Driven Cavity.
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