Modification of SIMPLE algorithm to handle natural convection flows with zero-isothermal compressibility

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• 作者：Yutaka Asako^a ; ^{y.asako@utm.my} ; Mohammad Faghri^b ; ^{faghrim@uri.edu}
• 关键词：SIMPLE ; Non-Boussinesq approximation ; Isothermal compressibility
• 刊名：International Journal of Heat and Mass Transfer
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：106
• 期：Complete
• 页码：177-182
• 全文大小：632 K
• 卷排序：106

文摘

Convergence problem of SIMPLE algorithm was investigated for unsteady natural convection in a cavity. SIMPLE algorithm encounters the convergence problem when the fluid has zero-isothermal compressibility. The cause of convergence problem was found and modification of SIMPLE algorithm was proposed. Physically consistent results were obtained by using modified SIMPLE algorithm. Residual of the continuity equation is an appropriate indicator of convergence in the SIMPLE algorithm.