Characteristic methods and Roe’s method for the incompressible two-fluid model for stratified pipe flow

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• 作者：A.H. Akselsen ^{andreas.h.akselsen@ntnu.no}
• 关键词：Two-phase ; Pipe-flow ; Two-fluid model ; Method of characteristics ; Roe scheme
• 刊名：International Journal of Multiphase Flow
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：89
• 期：Complete
• 页码：81-91
• 全文大小：1296 K
• 卷排序：89

文摘

Efficient Roe and characteristic methods are applied to the two-fluid model. New conservative hybrids of characteristic and finite volume methods are proposed. Characteristic schemes predict the onset of hydrodynamic instability most accurately. A strong sensitivity to the Courant number is observed with finite volume methods. Time steps can be significantly increased if a dynamic numerical grid is adopted.