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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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GA_phaseonly_binary_quality
一用遗传算法编写的唯相位波束综合程序，低副瓣程序(An phase-only pattern synthesis program by GA)
- 2020-11-14 23:19:42下载
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tuxiangshuiyin
利用二维离散小波，在一幅图像中嵌入水印，并对水印图像进行水印的提取和检测。(Using two-dimensional discrete wavelet, an image embedded in the watermark and image watermark extraction and detection.)
- 2010-11-25 21:29:10下载
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nengliangfangzhenyingwen
无线传感器网络四种分簇算法的关于能量消耗，能量消耗均衡度，节点死亡的仿真比较，leach，leach-c，deec，deec-c(Wireless sensor network clustering algorithm on the four energy consumption, energy consumption equilibrium degree, comparing the simulation node death, leach, leach-c, deec, deec-c)
- 2021-03-19 18:49:19下载
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seg-ijcv[1]
Graph-Based Segmentation 是经典的图像分割算法，该算法是基于图的 贪心聚类 算法，实现简单，速度比较快，精度也还行。(Graph based Segmentation is a classical image Segmentation algorithms, the algorithm is Based on the figure of greedy clustering algorithm, speed is faster, and easy to implement precision is also ok.)
- 2015-04-09 09:34:11下载
- 积分：1
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算例系统验证了模型与算法的可行性Distributed-energy-system-DING
在一个小型分布式发电系统的基础上, 建立分布式供能系统的调度策略和经济调度模型, 通过考虑各种电源的约束条件, 用改进的遗传算法进行求解, 使得分布式微网系统能够实现热电联供, 满足用户的需求. 算例系
统验证了模型与算法的可行性。(On the basis of a small distributed generation systems established on the scheduling policy and economic dispatch model of distributed energy supply system by considering various power constraints, improved genetic algorithm to solve such a distributed micro-grid system can achieve thermoelectric cogeneration, to meet the needs of users. Example system Operator
System to verify the feasibility of the model and algorithm.)
- 2014-03-24 14:44:45下载
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kernelpcaproj
这个代码可以在matlab6.5版本以上运行,至于低于这个版本的不能保证.(This code can run matlab6.5 version of the above, as below this version can not be guaranteed.)
- 2008-01-09 15:04:55下载
- 积分：1
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RootLocus
The result of the program is uncompensated and compensated plot of the control system.
- 2010-09-25 00:04:06下载
- 积分：1
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ch5_matDemo
高成编写的《matlab接口技术与应用》中例题的源代码(High into the preparation of the " matlab interface technology and applications" in the source code examples)
- 2010-10-19 22:14:10下载
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plss1d
PLSAMA MATERIAL PROGRAME
- 2011-05-10 15:27:13下载
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