材料中氢同位素的多维扩散行为计算  

Calculation on Multi-dimensional Diffusion of Hydrogen Isotopes in Material

作　　者：陈长安[1] 武胜[1] 倪然夫[1] 

机构地区：[1]中国工程物理研究院,四川绵阳621900

出　　处：《原子能科学技术》2001年第1期20-26,共7页Atomic Energy Science and Technology

摘　　要：研究了氢同位素在材料中多维扩散行为的有限差分计算方法。对二维扩散问题的交替方向隐式有限差分解法进行了推导 ,并用数值解和乘积法求出的解析解计算了圆柱体不锈钢样品一次充氘的浓度分布 ,两者的计算结果相近。无论是解析方法 ,还是数值方法 。The finite difference method is used to calculate the multi-dimensional diffusion of hydrogen isotopes in materials. As an example, the two-dimensional diffusion is numerically analyzed in detail by the alternative-directional-implicit (ADI) difference method. The distribution of deuterium in stainless steel cylinder once loaded with deuterium is calculated using the finite difference method and the analytic solution of product method, respectively, and results are in a good agreement. The multi-dimensional diffusion problem can be simplified to some one-dimensional ones in either numerical or analytic method.

关 键 词：氢同位素 多维扩散 有限差分 不锈钢 充氘 浓度分布 

分 类 号：TG142.71[一般工业技术—材料科学与工程] TL341[金属学及工艺—金属材料]