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A Rotational Pressure-Correction Scheme for Incompressible Two-Phase Flows with Open Boundaries
1Center for Computational & Applied Mathematics, Department of Mathematics, Purdue University, West Lafayette, Indiana, United States of America.
Plos One
|May 11, 2016
Summary
This study introduces novel open boundary conditions for two-phase flow simulations using the phase field method. The new algorithm ensures accurate and stable simulations of fluid interfaces at domain boundaries.
Area of Science:
- Computational fluid dynamics
- Multiphase flow modeling
Background:
- Two-phase outflows involve fluid interfaces crossing domain boundaries.
- Accurate simulation of these outflows is crucial for various engineering applications.
Purpose of the Study:
- To develop new open boundary conditions for two-phase outflow simulations.
- To present a robust numerical algorithm for treating these conditions.
Main Methods:
- Phase field framework for interface tracking.
- Rotational pressure correction algorithm for numerical treatment.
- Discretization leading to constant, time-independent coefficient matrices.
Main Results:
- Physically accurate simulation results validated against theory and experimental data.
- Demonstrated long-term stability of the method.
- Successful handling of large density/viscosity contrasts and backflows at boundaries.
Conclusions:
- The proposed method provides a stable and accurate approach for simulating two-phase outflows.
- The algorithm is effective even with complex flow conditions at open boundaries.
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