Simulation of Fluid Flow and Heat Transfer inside a U-shape Corrugated Cavity

In the present study, the natural convection heat transfer inside a corrugated U-shaped cavity studied numerically. For solving the mass equation (continuity), conservation of linear momentum equation and energy equation, the finite element method applied. The accuracy of used method investigated with the available results and a high agreement between them observed. Fluid flow is twodimensional and water is chosen as the working fluid in the cavity. Different Rayleigh numbers (103 -106 ) and corrugated walls are the variables affecting the fluid and heat transfer fields. The results expressed in terms of velocity contour, fluid flow, temperature and the average Nusselt number. The extracted results indicate that by rising the Rayleigh number, the heat transfer rate increases which the highest value of it is equal to 76.43 at Ra=106 . Also, at a fixed Rayleigh number, the smooth cavity has a highest heat transfer rate and the maximum of heat transfer’s loss occurs at cavity by corrugated on the both sides.