Influences of Marangoni effect on solidification of curved interfaces with const

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Influences of Marangoni effect on solidification of curved interfaces with constant curvature

The asymptotic method and phase field simulation are applied to study the influences of variation of the surface tension with temperature on the movements of solid-liquid interfaces in the solidification process of spherical and cylindrical nuclei,respectively.Results indicate that Marangoni effect will increase the critical nucleation radius,slow up the movement of interface.The tip speed of dendrite decreases linearly with Marangoni number for melt without convection.The results of phase field simulation are qualitatively in accord with that of asymptotic method.水利论文&@4I#Z*W+YFO _e9}D

作 者: HU Guo-hui ZHOU Zhe-wei  
作者单位:Shanghai Institute of Applied Mathematics and Mechanics,Shanghai University,Shanghai 200072,P.R.China;Shanghai Kev Laboratory of Mechanics in Energy and Environment Engineering,Shanghai 200072,P.R.China 
刊 名:应用数学和力学(英文版)  EI SCI
英文刊名:APPLIED MATHEMATICS AND MECHANICS 
年,卷(期):2008 29(2) 
分类号:TG111.4 
关键词:solidification   phase field simulation   Marangoni effect   asymptotic method   crystal growth  
机标关键词:phase field simulationasymptotic methodsolidification processcritical nucleationsurface tension 
基金项目:Shanghai International Cooperation Foundation,上海市重点学科建设项目 
下一篇:Research on nucleation and coagulation of nanoparticles in parallel twin jets
上一篇:Initial-boundary value problem of one class of nonlinear Schr(o)dinger equations
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