In the calculation, the mathematical model assumed by Winkler and its finite-differencesolution are adopted.
计算采用文克尔假定的数学模型及其有限差分解。
2
The results of the precise integration method agree well with the theoretical solution and have higher precision than those of the finitedifference method.
数值算例表明，用精细积分法得到的解与精确解十分吻合，比有限差分法具有更高的精度。
3
According to geologic model of unsteady groundwater flow in heterogeneous medium and adopting the finitedifferencesolution, the direction and strength of oil gas migration can be quantified.