The phase-field and lattice Boltzmann methods have been combined to simulate the growth of solid particles moving in melt flow.To handle mobile particles,an overlapping multigrid scheme was developed,in which each ind...The phase-field and lattice Boltzmann methods have been combined to simulate the growth of solid particles moving in melt flow.To handle mobile particles,an overlapping multigrid scheme was developed,in which each individual particle has its own moving grid,with local fields attached to it.Using this approach we were able to simulate simultaneous binary solidification,solute diffusion,melt flow,solid motion,the effect of gravity,and collision of the particles.The method has been applied for describing two possible modes of columnar to equiaxed transition in the Al–Ti system.展开更多
基金This work was supported by the ESA MAP/PECS project“GRADECET”(ESTEC Contract No.40000110759/11/NL/KML)the National Agency for Research,Development and Innovation,Hungary(NKFIH)under Contract Nos.K-115959 and KKP-126749.
文摘The phase-field and lattice Boltzmann methods have been combined to simulate the growth of solid particles moving in melt flow.To handle mobile particles,an overlapping multigrid scheme was developed,in which each individual particle has its own moving grid,with local fields attached to it.Using this approach we were able to simulate simultaneous binary solidification,solute diffusion,melt flow,solid motion,the effect of gravity,and collision of the particles.The method has been applied for describing two possible modes of columnar to equiaxed transition in the Al–Ti system.
