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FDM

于 2020-12-18 发布文件大小:22229KB

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下载积分: 1 下载次数: 128

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代码说明：

用有限差分方法求解波动方程，画出波场快照，模拟波在地下传播！(The wave equation by finite difference method, draw the wave field snapshot, simulate wave propagation in the underground!)

文件列表：

有限差分程序
............\FDM_600.c,53800,2013-05-19
............\FDM_bodywave
............\............\Debug
............\............\.....\FDM_bodywave.pch,201936,2014-07-10
............\............\.....\vc60.idb,33792,2014-07-10
............\............\.....\vc60.pdb,36864,2014-07-10
............\............\dwtc1200,2566404,2013-05-19
............\............\dwtc1500,2566404,2013-05-19
............\............\dwtc1800,2566404,2013-05-19
............\............\dwtc2100,2566404,2013-05-19
............\............\dwtc2400,2566404,2013-05-19
............\............\dwtc2700,2566404,2013-05-19
............\............\dwtc300,2566404,2013-05-19
............\............\dwtc3000,2566404,2013-05-19
............\............\dwtc600,2566404,2013-05-19
............\............\dwtc900,2566404,2013-05-19
............\............\FDM_bodywave.c,48980,2013-05-19
............\............\FDM_bodywave.dsw,532,2014-07-10
............\............\FDM_bodywave.exe,63540,2013-05-19
............\............\FDM_bodywave.ncb,33792,2014-07-10
............\............\FDM_bodywave.o,51560,2013-05-19
............\............\FDM_INSTALL_bodywave.m,2635,2014-07-15
............\............\install,7075244,2014-07-10
............\............\rec_u200.sgy,5001840,2013-05-19
............\............\rec_w2001.sgy,5001840,2013-05-19
............\............\vp,2566404,2014-07-10
............\............\程序说明.txt,706,2013-04-25
............\FDM_Rayleighwave
............\................\display_c.m,535,2013-04-25
............\................\FDM_INSTALL_Rayleighwave.m,2636,2013-04-25
............\................\FDM_Rayleigh.c,48621,2013-04-25
............\................\程序说明.txt,829,2013-04-25

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Y2M.m
使用Y矩阵来综合得到耦合矩阵M中各元素的matlab源代码(The Y matrix to obtain an integrated coupling matrix M of each element matlab source code)

2013-09-06 15:25:53下载

积分：1
Conjugate-Gradient-Method
共轭梯度法（Conjugate Gradient）是介于最速下降法与牛顿法之间的一个方法，它仅需利用一阶导数信息，但克服了最速下降法收敛慢的缺点，又避免了牛顿法需要存储和计算Hesse矩阵并求逆的缺点，共轭梯度法不仅是解决大型线性方程组最有用的方法之一，也是解大型非线性最优化最有效的算法之一。在各种优化算法中，共轭梯度法是非常重要的一种。其优点是所需存储量小，具有步收敛性，稳定性高，而且不需要任何外来参数。(Conjugate gradient method (Conjugate Gradient) is between the steepest descent method between the method and Newton' s method, it takes only a first derivative information, but to overcome the steepest descent method convergence slow shortcomings, but also to avoid the Newton method needs to be stored Hesse and disadvantages of computing inverse matrix and the conjugate gradient method is not only one of the most useful methods to solve large linear equations, solution of large-scale nonlinear optimization is one of the most effective algorithm. In various optimization algorithm, conjugate gradient method is a very important one. The advantage is that a small amount of memory required, with step convergence, high stability, and does not require any external parameters.)

2017-03-14 15:48:15下载

积分：1
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基于Levenberg-Marquardt的曲线/面拟合(C library for Levenberg-Marquardt least-squares minimization and curve fitting)

2014-02-14 04:20:28下载

积分：1
5CFDprogram
压缩包中包含五个CFD基础程序，其中MacCormack1DSolveRiemann.for是一维欧拉方程求解（黎曼问题），UpwindTVD_1D.for是一维可压粘性N-S方程求解，MAC-Chorin2D.for是利用MAC算法和Chorin压力迭代解法求解二维不可压缩黏性平板间Poisuille流动问题，Lax-Webdroff2D.for是利用Lax-Webdroff差分格式求解二维平面激波反射问题，fvm_upwind_MAC_couette.for是以一阶迎风型离散格式和Chorin压力迭代求解couette二维流动问题。(CFD compression package contains five basic program, which is an Euler equation solving MacCormack1DSolveRiemann.for (Riemann problem), UpwindTVD_1D.for is one-dimensional compressible viscous NS equation solving, MAC-Chorin2D.for is the use of algorithms and MAC Chorin pressure iterative solution for solving the two-dimensional incompressible flow problems between viscous flat Poisuille, Lax-Webdroff2D.for using Lax-Webdroff difference scheme for solving the two-dimensional plane shock wave reflection problem, fvm_upwind_MAC_couette.for based on first order upwind scheme and Discrete Chorin pressure couette iterative solution of two-dimensional flows.)

2015-01-16 19:01:12下载

积分：1
jie
说明：用四阶Runge-Kutta法解延迟微分方程组，用到的朋友看一下啊(Using fourth-order Runge-Kutta method for delay differential equations, a friend used to look at ah)

2008-11-05 23:32:53下载

积分：1
zxecf
一个集交互式和命令式于一体的程序，采用最小二乘法进行曲线的拟合(A set of interactive and command-style in one program, using least-squares curve fitting method)

2009-12-15 10:49:31下载

积分：1
mciduoxiangshinihe
用c++实现m次多项式的曲线拟合，改程序简单易懂，可读性强(it s easy)

2014-07-01 18:34:09下载

积分：1
drucker-prager
abaqus drucker-prager UMAT字程序(abaqus drucker-prager UMAT subroutine)

2021-04-01 17:19:08下载

积分：1
EEHMT0
根据给定的等距结点上的函数值与一阶导数值, 用埃尔米特等距插值公式计算指定插值点处的函数值。(According to the given equidistant nodes function value with a first derivative values, with equidistant interpolation Hermite interpolation formula specified function value at the point.)

2013-08-26 15:12:11下载

积分：1
fft
对机械中的振动信号进行傅立叶变换，作出频谱图进行分析。(Fourier transform of the vibration signal)

2009-10-19 19:01:34下载

积分：1

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