Dendritic growth in Al-2.5Cu alloy during isothermal solidification was simulated by phase field model coupling solute field with flow field to understand effects of forced convection

noise intensity and anisotropic on dendritic morphology.The results indicate that dendrite is grown asymmetrically in condition of forced convection

where the growth velocity of upstream dendrite is faster than that of downstream dendrite.Due to the effects of convection

the solute will be washed from upstream to downstream

resulting in the upstream concentration lower than the downstream one in the liquid alloy.With increasing in noise intensity

secondary dendrite arm in upstream direction becomes more and more developed as a result of the increase of lateral branch.Meanwhile

with rising in anisotropic value

the growth velocity of dendritic tip is promoted with decreasing in curvature radius.