Numerical Investigation of Conjugate Heat Transfer Between Spherical Solid Body and Fluid

Abstract

Conjugate heat transfer (CHT) happens often in engineering environments, involving convection as well as conduction in a fluid flow and a rigid body in contact with each other. Although the analytical solutions for the problems of the individual convection and conduction are surprisingly simple, solving the combined conjugate heat transfer problem is much more difficult. The CHT of a fluid (air) flowing past an unbounded sphere is the subject of this research. ANSYS Fluent V.16.0 is employed to solve the governing equations using a finite volume system, assuming axisymmetric, no normal convection, and steady physical properties. Heat is generated at a consistent and uniform rate by the sphere. The results demonstrated that as the air temperature rises, so does the temperature distribution. The temperature distribution will be reduced as the rate of air flow is raised. Also, the distribution of temperature will rise as the sphere heat flux increases. The flow rate distribution will increase as the air flow rate rises. The distribution of pressure will rise as the rate of air flow raises.