Y. Sun, C. Beckermann
A diffuse interface model is derived for the direct simulation of two-phase flows with surface tension, density differences between the phases, and phase change. The derivation starts from the balance equations for a sharp interface and uses a formal averaging procedure on an atomic scale to obtain diffuse interface versions of the equations. Two approaches are considered: (i) the two phases have different velocities inside the interface and separate conservation equations are solved for each phase, and (ii) the two phases have the same velocity inside the diffuse interface and mixture conservation equations are solved. Based on a superposition of microscopic (atomic-scale) and macroscopic interface morphologies, an expression for the interfacial momentum source term is introduced that models surface tension effects and accounts for immiscibility between the phases.
@article{125d912b-cfb3-46c3-8317-8399cf377598,
title={A DIFFUSE INTERFACE MODEL FOR TWO-PHASE FLOWS BASED ON AVERAGING},
author={Y. Sun and C. Beckermann},
year={2026},
language={en}
}TY - JOUR TI - A DIFFUSE INTERFACE MODEL FOR TWO-PHASE FLOWS BASED ON AVERAGING AU - Y. Sun AU - C. Beckermann PY - 2026 LA - en ER -
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