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基于实际定向凝固系统的对称性，采用线性近似方法计算了柱坐标系中、扩散控制条件下二元合金走向凝固时微弯曲固液界面导致的溶质径向下均匀分布结果表明溶质径向分凝定性上正比于溶质Peclet数、相对界面深度h·R－1及1-k（k为平衡溶质分凝系数）稍小于Coriell等由平面直角坐标系得出的结果
Based on the symmetry of the actual directional solidification system, the linear approximation method was used to calculate the uniform distribution of solute radial direction under the micro-bending solid-liquid interface when the binary alloy solidified in the diffusion-controlled condition. Qualitatively proportional to the solute Peclet number, the relative interface depth h · R-1 and 1-k (k is the equilibrium solute segregation coefficient) slightly smaller than the Coriell et al. Results from the Cartesian coordinate system