-
matlab_FEM_dismesh
DistMesh giving a singular FEM matrix?(Hi
Anyone here with some experience of using DistMesh in finite element code? I m solving the scalar Helmoltz equation in an annular region in 2D:
rho_1 < rho < rho_2
where rho_1 is the radius of a Perfect Electric Conducting cylinder and rho_2 is where the mesh is truncated using an Absorbing Boundary condition.
Now, I ve written code to mesh the region myself (by dividing the region into annular rings and picking a fixed number of points on each ring) and I ve written another program which uses DistMesh to mesh the region. I get a nice solution using my own meshing code but the FEM matrix becomes singular when I use DistMesh. This is the DistMesh Code I used:
Circle with hole
rABC=1.5
rCyl=0.5
fdstring=sprintf( ddiff(dcircle(p,0,0, f),dcircle(p,0,0, f)) ,rABC,rCyl)
fd=inline(fdstring, p )
box=[-2,-2 2,2]
[p,N]=distmesh2d(fd,@huniform,0.04,box,[])
I tried changing box and the 0.04 value (initial edge length). But every time, the matrix becomes sin)
- 2010-06-05 09:17:55下载
- 积分：1
-
fdtd3D_pec
finite difference time domain 3d code pec BC
- 2010-10-30 07:21:05下载
- 积分：1
-
MSKmodulationDemodulation
MSK 完整的调制及解调程序，包含主函数和所有的调用函数。(MSK modulation and demodulation contain main function and subfunction.)
- 2009-05-13 11:04:13下载
- 积分：1
-
nash
一个求解纳什交换的均衡问题的例程，运用了类似基因表示的做法，需要的请自行下载(Nash for a balanced exchange of the routines that use a similar approach expressed by the gene, Requests need to download)
- 2007-03-27 08:52:34下载
- 积分：1
-
MUSICforJointDOAandFrequencyEstimation
用MUSIC算法对信号波达方向和频率的研究.(MUSIC algorithm with DOA and frequency study.)
- 2007-05-13 13:46:16下载
- 积分：1
-
wendaolianghuatouzi
本书主要讲述以MATLAB为分析工具的量化投资，有 MATLAB入门 、“MATLAB量化投资基础”和“MATLAB量化投资相关函数详解”3篇组成。(This book focuses on MATLAB as analytical tools to quantify investment, " MATLAB Started" , " MATLAB-based quantitative investment" and " MATLAB Detailed quantitative investment related functions" three components.)
- 2020-09-11 00:08:00下载
- 积分：1
-
New-folder-(3)
this is a very good matlab code
- 2013-04-29 15:56:15下载
- 积分：1
-
BP
说明： BP神经网络实线0——9数字识别 MATLAB(BP neural network solid lines 0- 9 Digital Identification MATLAB)
- 2009-05-05 20:48:15下载
- 积分：1
-
matlab
说明： 该资料主要讲matlab编程技术，内容不错，适合初学者学习。(The information is mainly talk about matlab programming, content, good, suitable for beginners to learn.)
- 2010-03-18 10:39:09下载
- 积分：1
-
reception-process-simulation-model-
用matlab中的SIMULINK实现3路信号采样、时分复用传输和接收分路过程的仿真模型(3-way signal sampling, time division multiplexing transmission and reception process simulation model shunt)
- 2011-06-30 12:00:44下载
- 积分：1
