The Effect of Viscous Dissipation on Heat Transfer in Cavities of Varying Shape Due to an Inner Rotating Circular Cylinder

Abstract

In this study, the finite-volume-based computational methodology was used to investigate the effect of a highly viscous fluid on the evolution of flow and thermal fields in cavities of different shapes, including a circle, square, and equilateral triangle, due to an inner isothermal rotating cylinder. The temperature of the cavity wall was kept constant, but differed from that of the inner cylinder. Numerical results revealed that the triangular cavity had the greatest ability to dissipate internal thermal energy through the side walls, while the circular cavity had the worst performance.