Анализ влияния модели пористой среды на особенности теплообмена в полости при наличии пористого ребра

Abstract

The objective of this study is to compare the three models used for describing the flow of fluid inside porous fins attached to the heated wall of a differentially-heated square cavity: Darcy, Brinkman and Brinkman-Forchheimer models. A wide range of Rayleigh and Darcy numbers were investigated while the fin length, position and relative thermal coefficient were kept constant. Finite-difference method was used for solving governing equations. It was found that the Brinkman and Brinkman-Forchheimer models yield almost the same results at any Darcy numbers while the Darcy model is unstable at high Darcy numbers.