Numerical solution of hyperbolic two-fluid two-phase flow model with non-reflecting boundary conditions

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Flux vector splitting method is applied to the two-fluid six-equation model of two-phase flow, which takes account of surface tension effect via the interfacial pressure jump terms in the momentum equations. The latter terms using the concept of finite-thickness interface are derived as a simple function of fluid bulk moduli. We proved that the governing equation system is hyperbolic with real eigenvalues in the bubbly. slug, and annular flow regimes. The governing equations do not need any conventional artificial stabilizing terms like the virtual mass terms. Sonic speeds obtained through characteristic analysis show excellent agreement with the existing experimental data. Edwards pipe problem is solved as a benchmark test of the present two-phase equation model. (C) 2002 Elsevier Science Ltd. All rights reserved.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2002-04
Language
English
Article Type
Article
Keywords

2-PHASE FLOW; SURFACE-TENSION; EQUATIONS; STABILITY

Citation

INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE, v.40, no.7, pp.789 - 803

ISSN
0020-7225
DOI
10.1016/S0020-7225(01)00092-1
URI
http://hdl.handle.net/10203/16921
Appears in Collection
AE-Journal Papers(저널논문)
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