对优化算法求解Van Genuchten方程参数的敏感性分析

The Sensitivity Analysis on Van Genuchten Equation Parameter Solved by Optimize Arithmetic

运用非线性阻尼最小二乘法和单纯形法分别构造了计算Van Genuchten方程参数的优化方法,并通过实验数据表明两种方法计算精度都较高。通过对方程参数的敏感性分析认为,α和n值对计算精度影响较大,在计算时应重点选择α和n值。

The two optimize arithmetic ways used to solve Van Genuchten equation parameter are made in this paper. It showed that the calculation precision of the two ways are both better on the basis of the test data. After sensitivity analysis on the Van Genuchten equation parameters, the results indicated that the parameters of a and n have more influence than the other parameters of Van Genuchten equation. When parameters are calculated, the key matter should focus on choosing their initial value of a and n.