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各向异性相态场模型的Gibbs-Thompson关系 被引量:1

THE GIBBS-THOMPSON RELATION FOR ANISOTROPY PHASE-FIELD MODEL
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摘要 本文利用奇异摄动的内、外解匹配方法,分析了各向异性时在相态场模型的边界 层上表面张力、法向速度、平均曲率和各向异性函数的影响,得到了各向异性时的Gibbs- Thompson关系,以及边界层所满足的方程。 In this paper, the method of inner and outer matched asymptotic expansion is used to study the relationship of the surface tension, normal velocity, mean curvature and anisotropy function in the boundary of the anisotropy phase-field model. we obtain the anisotropy Gibbs-Thompson relation and the equation of boundary layer.
出处 《应用数学学报》 CSCD 北大核心 1999年第1期107-114,共8页 Acta Mathematicae Applicatae Sinica
基金 国家自然科学基金 航空科学基金
关键词 各向异性 相态场 奇异摄动 G-T关系 晶体 结晶 Anisotropy, phase-field, Gibbs-Thompson relation, asymptotic perturbation, inner and outer matching
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参考文献1

  • 1Gunduz Caginalp. An analysis of a phase field model of a free boundary[J] 1986,Archive for Rational Mechanics and Analysis(3):205~245

同被引文献5

  • 1Karma A, et al. Phase field method for computationally efficient modeling of solidification with arbitrary interface kinetics. Physical Review E, 1996, 53(4): R3017
  • 2Kobayashi R. Modeling and numerical simulations of dendritic crystal growth. Physica D, 1993, 63(10): 410
  • 3Beckermann C, et al. Model melt connection in phase-field simmulations of solidification. Journal of Computation Physics, 1999, 154(1):468
  • 4Willnecker R, et al. Evidence of nonequilibrium processes in rapid solidification of undercooled metals. Physical Review Letters, 1989,62(23): 2707
  • 5Anar M B. Dendritic growth rate at arbitrary undercooling. Physical Review A, 1990, 41(4): 2080

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