Description: 很好用的利用吸收边界条件解决二维maxwell方程的时域有限差分法matlab源程序- The very easy to use use absorbs boundary condition solution
two-dimensional maxwell the equation the time domain finite difference
method matlab source program Platform: |
Size: 4697 |
Author:谭仁兵 |
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Description: 外国人开发的电磁时域有限差分方法工具包
Electromagnetic Finite-Difference Time-Domain (EmFDTD)
is a basic two-dimensional FDTD code developed at the
School of Electrical Engineering, Sharif University of
Technology.
This code has been written based on the standard
Yee s FDTD algorithm. Applications include propagation,
scattering, and diffraction of electromagnetic waves
in homogeneous and non-homogeneous isotropic media
for in-plane propagating waves. Negative permittivites
or permeabilities as well as dispersion is not included.
Zero, Periodic, and Perfectly Matched Layer boundary
conditions may be selectively applied to the solution
domain.
The program is best suited for study of propagation and
diffraction of electromagnetic waves in Photonic Crystal
structures.
EmFDTD is written in MATLAB language and has been
tested under MATLAB 5.0 and higher versions. Platform: |
Size: 22020 |
Author:kezhebng |
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Description: 很好用的利用吸收边界条件解决二维maxwell方程的时域有限差分法matlab源程序- The very easy to use use absorbs boundary condition solution
two-dimensional maxwell the equation the time domain finite difference
method matlab source program Platform: |
Size: 4096 |
Author:谭仁兵 |
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Description: 该程序用fortran90编写，时域有限差分（FDTD)中的三维情况下完全匹配层（PML)吸收边界方法。-FORTRAN90 prepared with the program, finite difference time domain (FDTD) in the case of three-dimensional perfectly matched layer (PML) absorbing boundary method. Platform: |
Size: 8192 |
Author:maoyunfei |
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Description: 外国人开发的电磁时域有限差分方法工具包
Electromagnetic Finite-Difference Time-Domain (EmFDTD)
is a basic two-dimensional FDTD code developed at the
School of Electrical Engineering, Sharif University of
Technology.
This code has been written based on the standard
Yee s FDTD algorithm. Applications include propagation,
scattering, and diffraction of electromagnetic waves
in homogeneous and non-homogeneous isotropic media
for in-plane propagating waves. Negative permittivites
or permeabilities as well as dispersion is not included.
Zero, Periodic, and Perfectly Matched Layer boundary
conditions may be selectively applied to the solution
domain.
The program is best suited for study of propagation and
diffraction of electromagnetic waves in Photonic Crystal
structures.
EmFDTD is written in MATLAB language and has been
tested under MATLAB 5.0 and higher versions.-Foreigners developed electromagnetic FDTD method Toolkit Electromagnetic Finite-Difference Time-Domain (EmFDTD) is a basic two-dimensional FDTD code developed at the School of Electrical Engineering, Sharif University of Technology. This code has been written based on the standard Yee s FDTD algorithm. Applications include propagation, scattering, and diffraction of electromagnetic wavesin homogeneous and non-homogeneous isotropic mediafor in-plane propagating waves. Negative permittivites or permeabilities as well as dispersion is not included.Zero, Periodic, and Perfectly Matched Layer boundaryconditions may be selectively applied to the solution domain.The program is best suited for study of propagation anddiffraction of electromagnetic waves in Photonic Crystalstructures.EmFDTD is written in MATLAB language and has beentested under MATLAB 5.0 and higher versions. Platform: |
Size: 21504 |
Author: |
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Description: Language and environment: Fortran 90
This is a sample program of The Decomposed element free Galerkin method compared with the finite difference method for elastic wave propagation, by Katou, M., Matsuoka, T., Mikada, H., Sanada, Y. and Ashida, Y.
Here, we provide a sample code of the DEFGM (Decomposed Element Free Galerkin Method). The flow chart of the sample program defgm.f90 is described in Figure 4. It computes Rayleigh wave in section 7. The four side of calculation space is the free surface and there is no absorbing boundary.
This document shows how to use our sample program and change variables. -The decomposed element-free Galerkin (DEFG) method is a highly accurate method for solving elastic wave-equation problems. Platform: |
Size: 2172928 |
Author:蒋礼 |
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Description: 有限差分法
微分方程和积分微分方程数值解的方法。基本思想是把连续的定解区域用有限个离散点构成的网格来代替， 这些离散点称作网格的节点；把连续定解区域上的连续变量的函数用在网格上定义的离散变量函数来近似；把原方程和定解条件中的微商用差商来近似， 积分用积分和来近似，于是原微分方程和定解条件就近似地代之以代数方程组，即有限差分方程组 ， 解此方程组就可以得到原问题在离散点上的近似解。然后再利用插值方法便可以从离散解得到定解问题在整个区域上的近似解。
-Finite Difference Method
Numerical solution of differential equations and integro-differential equation approach. The basic idea is to set a continuous solution of the region with a finite number of discrete points instead of a grid consisting of, these discrete points called grid nodes the solution of a continuous area on a given function of continuous variables used in the definition of discrete grid variable function approximation the original equation and boundary conditions in the micro-business operators to approximate differential, integral with the points and to approximate, so the original differential equations and boundary conditions are replaced by algebraic equations near Side, that is, finite difference equations , solve this equation group can get the original problem in discrete points on the approximate solution. And then using interpolation methods can be determined from the discrete solution of the problem solution of the approximate solution on the entire region Platform: |
Size: 246784 |
Author:彭鑫 |
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Description: 利用matlab软件和时域有限差分方法来算三维结构的程序，采用了周期边界条件-Using matlab software and finite difference time domain method to count three-dimensional structure of the program, using the periodic boundary condition Platform: |
Size: 1024 |
Author:yuye |
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Description: 有限差分方法（网格法）是最早使用的一种电磁场数
值计算方法。
边值问题
物理思想：场域离散。
（连续区域→网格和节点）
数学基础：差分原理。
（微商→差商）
线性代数方程组
§6-3 有限差分方法
作为数值计算方法，有限差分法将连续场域的问题变换
为离散系统的问题（连续场域划分为若干个细小的区域：网
格和节点）。也就是说通过离散化模型上各离散点的数值解
来逼近连续场域内的真实解。-The finite difference method (grid method) is the earliest use of an electromagnetic field the number of
Value method.
Boundary Value Problems
Physical idea: the field of discrete.
(Contiguous area → grid nodes)
Mathematical foundations: the difference principle.
(The Derivative → difference quotient)
Linear algebraic equations.
§ 6-3 Finite Difference Method
Numerical methods, finite difference method will transform the problem of the continuous field
For discrete systems (continuous field is divided into several small areas: network
Grid nodes). That is, the value of the discrete points in the discrete model solution
To approximate the true solution of the continuous field domain. Platform: |
Size: 1024 |
Author:范阳阳 |
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Description: 1.掌握简单二维边值问题的分离变量求解方法；
2.通过有限差分法的实现来熟悉数值法的求解过程。
3.掌握并运用Matlab进行程序编程。
-1 master the simple two-dimensional boundary value problem solving method of separation of variables
2 through the realization of the finite difference method to become familiar with the process of solving the numerical method.
3. Grasp and use of Matlab programming. Platform: |
Size: 61440 |
Author:李凯 |
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Description: passion方程的第一类边界条件的数值解，边界条件过于复杂而无法求得解析解。这就需要借助于数值法来求电磁场的数值解。有限差分法便是一种比较容易的数值解法。-Numerical Solution of the first boundary condition passion equations and boundary conditions are too complex to be obtained by analytical solution. This requires the help of numerical methods to find numerical solution of electromagnetic fields. Finite difference method is a relatively easy numerical method. Platform: |
Size: 1024 |
Author:Jack |
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Description: 这是化学/石油工程师的有限体积（玩具）工具箱。
现在，它可以解决一个瞬变对流扩散方程的变速场/扩散系数。 离散化方案
包括：
?? * 中心差异扩散项
?? * 中央差分对流项
?? * 逆风对流期
?? * TVD对流项与各种流量限制器
?? * 瞬态项
?? * Dirichlet，Neumann，Robin和周期性边界条件(This is a finite volume (toy) toolbox for chemical/petroleum engineers.
Right now, it can solve a transient convection-diffusion equation with variable velocity field/diffusion coefficients. The discretization schemes
include:
* central difference diffusion term
* central difference convection term
* upwind convection term
* TVD convection term with various flux limiters
* transient term
* Dirichlet, Neumann, Robin, and periodic boundary conditions) Platform: |
Size: 1608704 |
Author:SONNY_YANG
|
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