Modeling and Cooling Analysis of Electronic Critical Components Fitted to A PCB with Natural Convection and Radiation using CFD-POST(ANSYS)

Sasidhar.G; Nova Sam Sandeep Nelli; Narisimha Murthy.T

Volume : IV, Issue : VII, July - 2015

Modeling and Cooling Analysis of Electronic Critical Components Fitted to A PCB with Natural Convection and Radiation using CFD-POST(ANSYS)

Sasidhar. G, Nova Sam Sandeep Nelli, Narisimha Murthy. T

Abstract :

The analytical study of cooling with natural convection and radiation from a heat source located at the bottom of a PCB is presented. The flow of fluid was assumed to be laminar, steady and of constant physical properties. The process was described by the continuity and energy partial differential equations, which were expressed in Cartesian coordinates system. The modeling and analysis of the PCB was done by using a finite element packages FLUENT, Design Modeler (DM), CFD-POST under ANSYS workbench. First cooling of PCB with natural convection is analyzed with some boundary conditions, later with the help of S2S radiation model and ray tracing method radiation cooling analysis also done. In both convection and radiation cooling temperature differences are notable. Numerical simulations carried out in this paper clearly demonstrate superiority of coupled convection and radiation cooling of the PCB over the popularly used natural air convection cooling of electronics. This is achieved by comp� with comparison factor in CFD-Post.