Abstract: Computation efficiency is not high in simulating dendritic growth by combining the SIMPLE algorithm with the phase field method. However, efficient Sola-phase field model (S-PFM) for complete coupling of phase field with flow field of undercooled melt is established to simulate the dendritic growth of udercooled melt in a forced laminar flow state. The model combines the phase field method with the Sola algorithm corrected by adaptive iteration scheme. Based on this model, the dendritic growth behavior of undercooled melt of high purity succinonitrile (SCN) is simulated. The results show that when the undercooled melt is in laminar flow state, the growth velocity of upstream dendritic tip is higher than that when the melt is without flow, but the growth velocity of downstream dendritic tip is lower than that when the melt is without flow. The results agree with the simulation results obtained by TONG and other phase field models which combine with SIMPLE algorithm. Moreover, growth velocity of dendritic tip normal to flow is not stable at the early stage of emergence of eddy current. Besides, the higher the laminar flow rate of undercooled melt is, the higher the growth velocity of upstream dendritic tip and the solid phase ratio will be.

Key words: Computer simulation, Dendritic growth, Laminar flow, Sola algorithm