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大家知道,无论是用有限差分法还是用有限单元法来离散水流力程,其结果均归结为解矩阵方程问题。对于线性流动问题,如果所得矩阵方程是低阶的,且系数阵的性质较好,则直接解法是有效的方法。但是在实际水文地质计算工作中,例如在进行水资源评价、矿床疏千计算时,涉及的问题通常相当复杂,为了逼近实际情况,保证计算精度,需要用迭代法解
As we all know, whether using finite difference method or finite element method to discrete water flow, the results are attributed to solve the matrix equation problem. For the linear flow problem, the direct solution is an efficient method if the resulting matrix equation is of lower order and the properties of the coefficient matrix are better. However, in the actual hydrogeological calculation work, for example, water resources assessment, thinning deposit calculation, the problems involved are usually quite complex, in order to approximate the actual situation, to ensure the accuracy of the calculation requires an iterative solution