The high-order difference method of wave equation has the advantages of high accuracy and small numerical dispersion.
波动方程高阶差分法具有精度高、数值频散小的优点。
Numerical experiments show that the new method is better than some other high-order difference methods given before, and applicable for advection-dominated problem.
数值算例表明本文方法优于以往的几种高精度差分格式，且适用于对流占优问题。
It is theoretically shown that the application of high-order difference method in structure and velocity images decreases frequency dispersion error, but improves effect and accuracy of computation...
理论分析表明，在构造与波速成像中采用高阶差分方法，可以减小频散误差、提高计算效率与计算精度、获得满意的效果。
A high order finite difference forward modelling method was proposed to improve its efficiency.
为了提高其效率，提出了一种高阶差分正演模拟方法。
A high order accuracy compact difference method is presented for soling unsteady convection equation with source term.
提出了求解含源汇项非定常对流扩散方程的一类高精度格式。
In this paper, we apply ADI and high-order compact finite difference method for large-scale asymmetric sparse matrix in semiconductor device simulation.
采用AD I与高阶紧致差分相结合的方法计算大型非对称稀疏矩阵，并实现了该算法在半导体器件模拟中的应用。
The application of ADI and high-order compact finite difference method to the breakdown voltage analysis of thin film SOI RESURF structure.
采用ADI与高阶紧致差分相结合的方法计算薄膜soiRESURF结构击穿电压。
First, constructed high order staggered-grid difference formulas, and discussed the stability and numerical dispersion of staggered grid method.
首先，构建高阶交错网格差分公式，讨论了交错网格法的稳定性与数值频散。
The results show that the staggered-grid high-order finite-difference method can satisfy the demands of engineering with high accuracy and rapid computation.
结果表明：交错网格高阶有限差分波场数值模拟具有较高的精度，计算速度快，基本能满足工程上的需要。
The results show that the staggered-grid high-order finite-difference method can satisfy the demands of engineering with high accuracy and rapid computation.
结果表明：交错网格高阶有限差分波场数值模拟具有较高的精度，计算速度快，基本能满足工程上的需要。
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