中文摘要：

分析有限体积法在一维非饱和土壤水分运动模型的数值算法上的适用性及优劣,通过算例对有限体积法进行验证.结果表明,有限体积法同样适用于一维非饱和土壤水分运动,与大多数学者都采用的有限差分法计算结果比较发现两种算法的数值模拟结果相近.但是改变网格疏密后,对有限体积法的计算结果影响不大且与实测值相近,而对有限差分法的计算结果有影响,从而说明在网格稀疏的情况下,有限体积法更好.

英文摘要：

The applicability and pros or cons of finite volume method in one-dimensional model of water movement in unsaturated soil were analyzed. The finite volume method was verified by a numerical example. The results showed that the finite volume method was appliable to one-dimensional model of water movement in unsaturated soil. Compared with the finite difference method used by most scholars, the numerical simulation results of two algorithms were similar. Changing the mesh density on the finite volume method had little effect on the calculated results similiar to the measured values, while the finite difference method calculation was affected. In the case of sparse grid, the finite volume method was better.