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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
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RANDOM_SIGNAL_PROCESSING
MATLAB在振动信号处理中的应用,书籍和源码
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sdm_pll
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Matlab_implot
MATLAB 解决 隐函数 的 方法
对解方程比较有用
implot(MATLAB to solve implicit function method of solving equations more useful implot)
- 2021-04-04 11:29:04下载
- 积分：1
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matlab-am-fm-pm
几种模拟调制的matlab实现
am,fm,pm
matlab7.0以上版本才可看(Several analog modulation matlab realize am, fm, pmmatlab7.0 can see above)
- 2008-04-13 12:07:03下载
- 积分：1
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RLS
LSE算法应用，很好用，请使用(LSE algorithm applications, very good use, please use)
- 2008-07-01 19:28:04下载
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matlabjiangzuo
关于matlab的讲座，matlab是一个很好用的工具，希望对大家有帮助。(lectures on Matlab, Matlab is a very good use of the tools, we hope to help.)
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ecgprocessing
Matlab QRS pulse generation
- 2009-04-17 01:57:07下载
- 积分：1
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Bai3-TinhtoantrongMAPLE2
Maple
Bai 3: Tinh toan trong maple phan 2
- 2010-11-28 11:57:41下载
- 积分：1
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Helbreath
战场最新源代码大家一起研究一下。看看还有什么不对的地方进行最新的描述(大家一起研究一下。看看还有什么不对的地方进行最新的描述)
- 2010-02-25 07:18:50下载
- 积分：1
