A Stable Dendritic Growth with Forced Convection: A Test of Theory Using Enthalpy-Based Modeling Methods

A. Kao (1) , L. V Toropova (2) , I. Krastins (3) , G. Demange (4) , D. V Alexandrov (2) , P. K Galenko (5)

1 University of Greenwich
2 UrFU - Ural Federal University [Ekaterinburg]
3 LU - University of Latvia
4 GPM - Groupe de physique des matériaux
5 DLR Institut für Materialphysik im Weltraum

The theory of stable dendritic growth within a forced convective flow field is tested against the enthalpy method for a single-component nickel melt. The growth rate of dendritic tips and their tip diameter are plotted as functions of the melt undercooling using the theoretical model (stability criterion and undercooling balance condition) and computer simulations. The theory and computations are in good agreement for a broad range of fluid velocities. In addition, the dendrite tip diameter decreases, and its tip velocity increases with increasing fluid velocity.

Domains: Chemical Sciences; Physics [physics]; Nonlinear Sciences [physics]

A. Kao, L. V Toropova, I. Krastins, G. Demange, D. V Alexandrov, et al.. A Stable Dendritic Growth with Forced Convection: A Test of Theory Using Enthalpy-Based Modeling Methods. JOM Journal of the Minerals, Metals and Materials Society, 2020, 72 (9), pp.3123-3131. ⟨10.1007/s11837-020-04292-4⟩. ⟨hal-02943168⟩