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A simple phase transition relaxation solver for liquid–vapor flows
Author(s) -
Chiapolino Alexandre,
Boivin Pierre,
Saurel Richard
Publication year - 2016
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.4282
Subject(s) - solver , computation , multiphase flow , computer science , simple (philosophy) , flow (mathematics) , two phase flow , phase (matter) , relaxation (psychology) , phase diagram , mathematical optimization , thermodynamics , mechanics , mathematics , statistical physics , algorithm , chemistry , physics , psychology , social psychology , philosophy , epistemology , organic chemistry
Summary Determining liquid–vapor phase equilibrium is often required in multiphase flow computations. Existing equilibrium solvers are either accurate but computationally expensive or cheap but inaccurate. The present paper aims at building a fast and accurate specific phase equilibrium solver, specifically devoted to unsteady multiphase flow computations. Moreover, the solver is efficient at phase diagram bounds, where non‐equilibrium pure liquid and pure gas are present. It is systematically validated against solutions based on an accurate (but expensive) solver. Its capability to deal with cavitating, evaporating, and condensing two‐phase flows is highlighted on severe test problems both 1D and 2D. Copyright © 2016 John Wiley & Sons, Ltd.