Numerical simulation of complete liquid-vapour phase change process inside porous media: A comparison between local thermal equilibrium and non-equilibrium models

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• 作者：Omar Rafae Alomar^a ; ^b ; ^{sedrarasha@yahoo.com} ; Miguel A.A. Mendes^a ; Dimosthenis Trimis^a ; ^c ; Subhashis Ray^a ; ^{Subhashis.Ray@iwtt.tu-freiberg.de} ; ^{juhp_sray@yahoo.co.in}
• 关键词：Porous medium ; TPMM ; Complete phase change process ; LTE and LTNE models ; Smoothing of effective diffusion coefficient
• 刊名：International Journal of Thermal Sciences
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：112
• 期：Complete
• 页码：222-241
• 全文大小：5338 K
• 卷排序：112

文摘

Simulation of complete liquid-vapour phase change process has been considered. The two phase mixture model has been used along with LTE and LTNE assumptions. Smoothing of effective diffusion coefficient is essential for all cases. LTE model produces unrealistic results and hence LTNE model is recommended. For partitioning of wall heat flux, Model-2 is the most realistic and Model-1 is the most stable.