1) high-order finite-difference method
高阶有限差分法
2) Higher-order finite-difference time-domain
高阶时域有限差分法
3) high-order difference
高阶有限差分
1.
Research results:Results show that by the hybrid method of the absorbing boundary and the nonreflecting boundary,the boundary reflection may be absorbed completely,and by the staggered-grid high-order difference method,the simulated result is very efficiently and precisely.
研究结果:采用吸收边界和加阻尼边界的方法,边界反射基本上达到完全吸收的效果;采用交错网络的高阶有限差分计算,能够直观、准确的反映出非均匀岩层、溶洞、软弱夹层等隧道复杂构造和不良地质灾害体的地震波传播特征。
2.
The snapshots of the wave-filed of heterogeneous media using the high-order difference forward modeling with stagg.
文中构造了不同类型的介质模型,并在交错网格中,利用高阶有限差分模拟非均匀介质的波场传播。
4) high-order finite difference
高阶有限差分
1.
3D staggered-grid high-order finite difference numerical simulation of elastic wave equation in porous isotropic media based on BISQ model;
基于BISQ模型的各向同性孔隙介质弹性波三维交错网格高阶有限差分数值模拟
5) high-order finite-difference
高阶有限差分
1.
Staggering grid high-order finite-difference modeling of elastic wave transmission in biphase anisotropic medium.;
双相各向异性介质弹性波传播交错网格高阶有限差分法模拟
2.
Numerical modeling using staggered-grid high-order finite-difference of elastic wave equation on arbitrary relief surface.;
任意起伏地表弹性波方程交错网格高阶有限差分法数值模拟
3.
The paper uses staggering grids high-order finite-difference method to study the S-wave splitting and second splitting phenomenon in layered anisotropic media, deduced relative formula of absorption board condition in PML method that was applied to elastic wavefield simulation in anisotropic media and achieved good results.
本文利用交错网格高阶有限差分法重点研究了层状各向异性介质中横波分裂和再分裂的现象,推导出了相应的PML法吸收边界条件公式,并应用于各向异性介质弹性波波场模拟,取得了良好的效果。
补充资料：对称差分(n阶的)
对称差分(n阶的)
symmetric difference of order
对称差分(n阶的)l另11111州tric山ffer曰℃eof份der‘c“MMe邓一，ecK即pa3Hoc几“op，皿Kan」，一元实变函数f在点x上的 表达式 声/n、，.、。，/.n一Zk八 △口ffx，h)=)l:’1(一1)“f lx十二二~一竺二生h 1. 一‘““一””k饥戈k/、‘产“戈一2‘’/‘将h换成Zh，下面的表达式也称为对称差分: 息川(一1)*，‘二+、。一2、)。).假若f(x)在x有n阶导数厂时(x)，那么 △二f(x，h)=./戈n)(x)h”+o(h”). T .fl .J’IyKame皿。撰
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参考词条