Various borehole and formation conditions were simulated using the fourth order accuracy in space and second order accuracy in time centered finite difference method.
利用空间上具有四阶精度、时间上具有二阶精度的中心差分方法，数值模拟了几种复杂井眼条件下的波场。
Ordinary finite element and finite difference methods are often used for seepage calculation, while storage centered finite element method is rarely applied to practice.
普通有限元方法和有限差分方法是渗流计算中常用的数值方法，而贮量集中有限元方法则很少被实际应用。
This paper presents an optimization of centered finite-difference operator based on the principle of constrained cost function, which can reduce the truncation error to minimum.
作者根据约束性代价函数原理提出了能够使得截断误差最小化的中心差分优化算子。
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