一种改进的FDTD网格剖分算法_stmopen 关键词】: 非均匀网格 时域有限差分 高频数值色散 [gap=730]Keywords】: non-uniform gridFDTDhigh-frequency dispersion
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non-uniform grid distribution 非均匀网格分布
non-uniform grid graph 非均匀网格图
non-uniform grid generation 非均匀网格剖分
uniform and non-uniform grid methods 均匀与非均匀网格方法
Pseudospectral time-domain with non-uniform grid 非均匀网格时域伪谱算法
Non-uniform staggered grid 局部加密交错网格
non-uniform orthogonal grid 非统一尺寸正交网格划分
Second, general non-uniform difference equations are discussed. Contour-path law with integral model is applied in non-uniform grid, so we can obtain the integral equations on the boundary of different grid length.
接着讨论了常规非均匀网格的差分方程，将积分形式的环路定理应用于非均匀网格，在不同网格边长边界处得到时域上的积分方程，利用时间和空间上的中心差分近似离散方程得到时域有限差分法的差分方程。
参考来源 - 非均匀网格的时域有限差分算法Because of the big temperature gradient near the flame zone, non-uniform grid is used and finite difference method is used to discretize the control equations and Fortran is used to write calculating code.
由于火焰附近的温度梯度很大,本文采用非均匀网格,用有限差分法对控制方程组进行了离散,在此基础上用Fortran语言编写了计算程序。
参考来源 - 天然气在惰性多孔介质内预混燃烧的数值模拟研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Besides, the precision under non-uniform grid format was lower 0 ~ 1 order than in uniform grid with the same methods.
同种方法在非均匀网格下的格式精度较在均匀网格下低0 ~ 1阶。
In order to reduce model error, we use non-uniform grid, if the parameter's changing is fast, we use fine grid, else we use coarse grid.
为了降低模型误差，引入非均匀网格，并且自适应的在参数变化快的地方用较细网格，其他地方用较粗网格。
The dual grid method can provide a useful tool for numerically simulating the fluvial processes with non-uniform boundary conditions.
“双网格”方法和相应的算法为非均匀边界条件控制下河道演变的数值模拟提供了保证。
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