Phase-Field Analysis of Dendrite Growth with Melt Flow

(Large-Scale Simulation Using GPU Supercomputer)

Abstract

Dendrite morphology is drastically changed due to the liquid flow, such as forced and natural convections, during the solidification of metallic alloys. We have developed a phase-field lattice Boltzmann method to simulate the dendrite growth during the alloy solidification in the presence of the liquid flow. Here, we have employed the phase-field and lattice Boltzmann methods to express the dendrite growth and liquid flow, respectively. In addition, a parallel computation using multiple graphical processing units in a supercomputer has been enabled to accelerate the phase-field lattice Boltzmann simulation. In this report, the phase-field lattice Boltzmann model is briefly explained, and some dendrite growth simulations using the model are introduced.