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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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debchcode
bch编码matlab 仿真,信道编码BCH码仿真，希望大家能用得上(bch encoding)
- 2010-03-10 11:16:20下载
- 积分：1
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PLL_System_Sim_for_matlab
PLL_System_Sim_for_matlab————(PLL_System_Sim_for_matlab----)
- 2013-04-16 21:07:26下载
- 积分：1
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Cha7_Heat_2017_Weak_4
说明： Lecture on Week number 4
- 2019-05-22 20:20:07下载
- 积分：1
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DirectionalFilters
Implements a directional Gaussian filter.
it can be used to evaluate the first directional derivative of an image.
- 2010-12-21 23:25:04下载
- 积分：1
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MALAB
基本上涵盖了所有的matlab应用函数，无论是初学者还是做深入研究仿真应用，都很实用(Basically covers all of the matlab application function, whether a beginner or do in-depth research simulation applications, are useful)
- 2010-05-27 16:08:43下载
- 积分：1
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skin-depth
Skin effect is the tendency of an alternating electric current (AC) to distribute itself within a conductor with the current density being largest near the surface of the conductor, decreasing at greater depths. The electric current flows mainly at the "skin" of the conductor, between the outer surface and a level called the skin depth
- 2011-12-17 02:50:06下载
- 积分：1
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matlab_file_on_Basic_on_magnetic_transmission_lin
matlab file on Line Parameters and Circuit Models,
Switching Transients in Single-Phase Line simulation
- 2010-11-30 18:52:35下载
- 积分：1
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bspline_tools_1_1
B样条工具箱，一个非常有用的matlb工具箱
可以很方便的进行样条插值(B-spline toolbox, a very useful matlb Toolbox can easily be spline interpolation)
- 2010-12-26 14:05:22下载
- 积分：1
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Matlab-wavelet-analysis-toolbox
Matlab小波分析工具箱原理与应用 电子版书籍(Matlab wavelet analysis toolbox principle and application of the electronic books)
- 2011-04-19 16:08:55下载
- 积分：1
