Studies of interaction of convective flow with free dendritic growth

• Published in: Journal of crystal growth Vol. 292; no. 2; pp. 523 - 527
• Main Author: Xu, Jian-Jun
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.07.2006; Elsevier
• Subjects: A1. Buoyancy effect; A1. Convective flow; A1. Density change; A1. Selection condition; A1. Stability; A2. Dendritic growth; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Methods of crystal growth; physics of crystal growth; Physics; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Theory and models of crystal growth; physics of crystal growth, crystal morphology and orientation; Whiskers and dendrites (growth, structure, and nonelectronic properties); A1. Buoyancy effect; A1. Density change; A1. Stability; A1. Selection condition; A1. Convective flow; 81.10.Aj; 68.70. + w; A2. Dendritic growth; 81.30.Fb; Phase transformations; Reynolds number; Theoretical study; Density; 68.70.+w; Convection; 81.30.Fb A1. Buoyancy effect; Dendritic structure; Crystal growth from melts
• ISSN: 0022-0248; 1873-5002
• DOI: 10.1016/j.jcrysgro.2006.04.071

The interaction between convection and dendritic growth has been a subject of great interest in the area of material science for many years. The experimental observations have shown that convective motion in liquid may have a significant effect on dendritic growth, changing the growth velocity of the tip and the micro-structure pattern. The convective flow, in different cases, may be measured by the Reynolds number, Grashof number, or the parameter of density change during phase transition. In this paper, I shall discuss the effect of convective flow on steady axisymmetric dendritic growth from an undercooled pure melt and summarize the linear stability criterion for several typical cases.