Kinetic dendrite in the boundary-layer model

D. Temkin , J. Géminard , P. Oswald

Within the boundary-layer model and by taking into account only interface kinetics (isotropic or anisotropic), we find a continuous set of "kinetic" dendrites. This solution exists at arbitrary supercooling Δ in the 2D- and 3D-axisymmetric cases and reduces to the usual dendrites with parabolic tails at Δ < 1, and "angular" dendrites at Δ > 1. In contrast with classical Ivantsov dendrites, there are upper limits for growth velocity and tip curvature at each supercooling Δ.

Domaines: Articles anciens

D. Temkin, J. Géminard, P. Oswald. Kinetic dendrite in the boundary-layer model. Journal de Physique I, 1994, 4 (3), pp.403-409. ⟨10.1051/jp1:1994147⟩. ⟨jpa-00246916⟩