-
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
-
wsn-dijkstra
这个程序为能量均衡的无线传感器的最短路径路由算法matlab 编程。(This process is energy balanced shortest path routing in wireless sensor algorithm matlab programming.
)
- 2010-06-12 15:04:37下载
- 积分：1
-
QAM_Modem_Demo
QAM 调制完整代码，MATLAB实现，通俗易懂，适合初学者学习参考。(QAM Modem Demo)
- 2010-07-22 15:04:42下载
- 积分：1
-
kmeans
说明： Matlab的kmeans算法实现，有很详细得说明(Matlab)
- 2008-09-08 13:31:17下载
- 积分：1
-
moving_detection
说明： 本程序是一个采用背景差分的运动目标检测方法(This program is a moving target using the background difference detection method)
- 2011-03-02 15:08:44下载
- 积分：1
-
shengbo
三维声波正演模拟的matlab程序 边界条件为pml(
Three dimensional acoustic wave forward simulation of matlab program)
- 2017-01-06 17:37:47下载
- 积分：1
-
the-matlab-playing-Canon
用matlab语言实现卡农在matlab上的演奏，通过试验，可以运行。(Canon played in matlab matlab language test, you can run.)
- 2012-05-28 21:17:11下载
- 积分：1
-
dsp_system
实现一个数字信号处理的仿真系统 。具有界面并实现以下功能：能产生（得到）并选择各种数字信号（sin、方波、三角波、语音、噪声及其叠加）；具有DFT和DCT变换功能，对各种信号进行变换；设计滤波器实现低通、高通、带通滤波，得到输出信号的频域特性和时间序列。(the realization of a digital signal processing simulation system. Requires interface and achieve the following functions: to produce (to be) and select a variety of digital signal (sin, square, triangle wave, voice, noise, and overlay)with DFT and DCT features a variety of signals transform Filter Design low pass, high pass, band pass filter, the output signal of the frequency domain to get the features and time series.)
- 2011-09-07 11:07:00下载
- 积分：1
-
kalman-filter
假设一物体围绕一圆周运动，角加速度是白噪声，观测噪声也是零均值的白噪声。编程使用卡尔曼滤波器实现运动物体的跟踪。(Suppose an object around a circular motion, the angular acceleration is white noise, measurement noise is zero mean white noise. Programming using a Kalman filter to achieve tracking moving objects.)
- 2015-01-30 17:01:52下载
- 积分：1
-
Grey-Model-master
说明： 基于灰色模型做的电力负荷预测，代码可运行(Grey model for load forecasting)
- 2021-01-01 16:28:57下载
- 积分：1
