Abstract
In this article, numerical study of heat transfer by convection in a square cavity was investigated. The vertical walls of the cavity are differentially heated and the horizontal walls are considered adiabatic. A ventilation jet is created by a fan placed in the cavity. A lattice Boltzmann model for incompressible flow equation is used to simulate the problem. A parametric study was performed presenting the influence of Reynolds number (20 ≤ Re ≤ 500), Rayleigh number (10≤Ra ≤ 10+6), and fan position (0.2 ≤ LF≤0.8). It has been observed that heat transfer rate increases with the Reynolds number increasing and it is maximal for the LF=0.2.
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