Analysis of Natural Convection Flow through Square Cavity by Computational Fluid Dynamic Analysis

Laminar natural convection of air into inner rectangular cavity with localized heating from vertical side wall has been investigated by using computation fluid dynamic analysis in ansys. The square cavity consists of two adiabatic top and bottom wall and air filled closed two dimensional geometry. Two stage investigations have been performed to find out the variation in the result between different approaches. The inclination angle of the enclosure was keep constant at 90°, and the effect of heat transfer was investigated over the range 103-Ra-106. Correlations of average Nusselt number based on the CFD results are presented for vertical cases. Solutions are obtained for several Rayleigh numbers with Prandtl number Pr = 0.70 and aspect ratio 1.The Pressure-Velocity Coupling Method used with Non-Iterative Time Advancement (NITA) scheme used to solve the problem. The distribution of temperature and stream function are taken as a function of thermal and geometrical output parameter for given problem.