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Meshless simulation of a macrosegregation benchmark considering the solid motionViktor Govže,
Igor Vušanović,
Božidar Šarler, 2023, published scientific conference contribution
Abstract: We have extended the existing two-dimensional rigid solid phase benchmark for binary substance with the solid phase motion in the present paper. Incompressible laminar Newtonian flow is assumed, and a standard mixture formulation is used for the mass, momentum, energy, and solute transport. A coherency solid motion model accounts for the free-floating grains, assuming that the solid velocity is proportional to the mixture velocity and the liquid fraction. The lever rule is used to describe the mass fractions of the phases. A two-dimensional benchmark is solved using the semi-implicit meshless diffuse approximate method with an adaptive subdomain upwinding strategy. The results of the meshless method are compared to the finite volume method results with a reasonable agreement. The new benchmark results show that the solid motion has an essential effect on the macrosegregation pattern.
Keywords: solidification, meshless methods, grain motion, benchmarks
Published in DiRROS: 21.03.2024; Views: 179; Downloads: 82
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