性感卡通美女图片各向异性表面张力对定向凝固中深胞晶生长的影响

2020年12月30日发(作者：巫箴)
各向异性表面张力对定向凝固中深胞晶生长的影响
陈明文;陈弈臣;张文龙;刘秀敏;王自东< br>

【期刊名称】《物理学报》

【年(卷),期】2014(000)003

【摘要】利用匹配渐近展开法和多变量 展开法求出定向凝固深胞晶生长的浓度
场和界面形态的全局渐近解，研究各向异性表面张力对定向凝固深 胞晶生长的
影响。结果表明，各向异性表面张力对定向凝固过程深胞晶生长有显著的影响。
随着 各向异性表面张力增大，胞晶前端部分浓度减小而胞晶界面收缩；胞晶根
部的浓度增大而界面曲率增大或 根部的曲率半径减小，各向异性表面张力使得
深胞晶界面振幅增加。本文结果能够计算定向凝固过程中深 胞晶生长的浓度、
界面形态。%An asymptotic solution of the concentration and interface
morphology for a deep cellular crystal in directional solidification is
obtained by using the matched asymptotic expansion method and
multiple variable expansion method, and the effect of anisotropic
surface tension on deep cellular crystal growth is studied. Results show
that the anisotropic surface tension has a significant effect on the
concentration and interface shape of deep cellular crystal growth in
directional solidification. As the anisotropic surface tension parameter
increases, the concentration near the front part of deep cellular crystal
decays and the interface shrinks;when as the concentration near the
root increases and the curvature of the interface near the root increases
or the curvature radius decreases;and the amplitude of the deep cellular