Consistency and accuracy in the simulation of two-phase flows with phase change using sharp interface capturing methods
نویسندگان
چکیده
In this paper, the modeling of phase change in an incompressible two-phase flow solver is detailed without restricting numerical methods to a specific interface capturing method. Starting from existing methodologies literature, present work gives step-by-step investigation each aspect obtain accurate and consistent solver. The main challenge when including phase-change handling flux discontinuities at advancing temperature species mass fraction. An second order discretization proposed for any Eulerian representation either by adding sharp source term or imposing boundary condition interface. As accuracy convergence rate such are driven reconstruction evaporation m˙, particular attention devoted gradient normal Several compute second-order gradients location adapted representation. Applying techniques field leads expected first m˙ but with remarkable improvements using ghost cell quadratic extrapolation. Then, several procedures built combining selection handle evaluate gradients. investigated on planar simulations bring out inconsistent combination choices. Finally, multidimensional test case presented show final limitations today solvers.
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ژورنال
عنوان ژورنال: Journal of Computational Physics
سال: 2022
ISSN: ['1090-2716', '0021-9991']
DOI: https://doi.org/10.1016/j.jcp.2022.111604