Numerical Simulation on Pool Boiling

Abstract

The pool boiling process is one of the most e cient heat transfer mechanisms, trans- mitting enormous amounts of heat only with a modest temperature di erence between the heated surface and the uid. Furthermore, ow boiling studies and applications begin with a basic understanding of pool boiling processes. As a result, it has been and contin- ues to be the topic of substantial research around the world, and a critical examination is now required in order to go forward with improved surface designs. The present goal of this study is to better understand the fundamentals of boiling, such as bubble forma- tion, growth, and dynamics. Fluid-surface interaction is crucial in this situation. The e ects of surface roughness and surface geometry on vertical ow boiling heat transfer are investigated through a review of recent studies to determine experimental heat transfer correlations under various surface and uid conditions, with a focus on convective and nucleate boiling regimes before the system reaches critical heat ux, as well as a model simulation of a 2-D Volume of Fluid (VOF). A detailed of the examination and explana- tion utilized by the software ANSYS ( uent) as well as their source, shall be investigated. Bubble nucleation is a well-studied aspect of the boiling process, and nucleation mecha- nisms are important in both stagnant pool boiling conditions. This paper o ers a review of the research on how surface interactions, as well as characteristics like surface rough- ness, a ect bubble nucleation in stagnant pool boiling. Therefore, the initially desired to design a CFD simulation and designed simulations for steady state vertical up ow boiling in narrow, axially symmetric with constant wall heat ux. The VOF model was used to simulate the analysis in ANSYS ( uent) software.