摘要
用质量平衡原理推导了柱坐标扩散方程的差分格式，计算了碳浓度分布，分析了曲面曲率半径的影响。当曲面曲率半径较大时，用柱坐标与直角坐标计算差别很小。当曲面曲率半径较小时两者有明显差异。
Based on the law of conservation of mass,the finite differential equation for cylindrical carburizing diffusion is introduced.The carbon concentration profile is simulated.The effect of curvature radius is discussed.When curvature radius is larger the results for rectangular and cylindrical coordinate are the same.When radius is lesser,there is a obvious difference between the two shapes.
关键词
渗碳
计算机模拟
有限差分法
曲面
carburizing,\ computer simulation,\ finite differential method
