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首页> 外文期刊>Numerical Heat Transfer, Part A. Application: An International Journal of Computation and Methodology >Analysis of entropy generation during natural convection within entrapped porous triangular cavities during hot or cold fluid disposal
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Analysis of entropy generation during natural convection within entrapped porous triangular cavities during hot or cold fluid disposal

机译:热流体或冷流体处置过程中截留的多孔三角形空腔内自然对流过程中的熵产生分析

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摘要

Entropy generation analysis is carried out during natural convection within entrapped porous triangular cavities for two cases based on the heating or cooling of the inclined and horizontal walls (case 1: hot inclined walls with cold horizontal walls and case 2: cold inclined walls with hot horizontal walls). The results are plotted in terms of the isotherms (theta), streamlines (psi), and entropy generation maps (S-theta and S-psi). The total entropy generation (S-total), average Bejan number (Be-av), and average Nusselt number ((Nu(t)) over bar or (Nu(b)) over bar) as a function of Darcy number (Da(m)) at a high Rayleigh number (Ra-m = 10(6)) have been studied for both cases 1 and 2 and the optimal case is recommended based on least S-total and largest (Nu(t)) over bar or (Nu(b))over bar>.
机译:两种情况下,在对流多孔三角形腔体内自然对流过程中,根据倾斜和水平壁的加热或冷却,进行熵产生分析(情况1:水平壁冷的热倾斜壁和情况2:水平壁冷的冷倾斜壁)墙壁)。根据等温线(θ),流线(psi)和熵生成图(S-theta和S-psi)绘制结果。总熵产生(S-total),平均Bejan数(Be-av)和平均Nusselt数(bar上的(Nu(t))或bar上的(Nu(b)))作为达西数(Da (m))在高瑞利数(Ra-m = 10(6))下已经针对情况1和2进行了研究,并且基于最小S总和最大(Nu(t))来推荐最佳情况或(Nu(b))在栏上>。

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