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A robust computational framework for the mixture-energy-consistent six-equation two-phase model with instantaneous mechanical relaxation terms
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DOI：10.1016/j.compfluid.2026.107193.png)
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Abstract
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• Analysis and comparison of several numerical strategies for the 6-equation two-phase model with and without instantaneous relaxation. • Focus on the homogeneous part of the system with non-conservative terms, analysis of jump conditions and approximate Riemann solvers. • Novel perspective on the numerical treatment and analysis of non-conservative terms. • Design of an optimal strategy and robust computational framework mitigating the lack of a complete set of jump relations. • Assessment of the strategy on a series of well-chosen and challenging test cases.
Keywords:
Two-phase flows
Six-equation model
Finite volume schemes
Wave-propagation scheme
Non-conservative terms discretization
Riemann solvers
Relaxation source terms
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