实现了心电曲线的实时绘制，正常QT间期范围设置、QT间期、QR间期的实时显示、可以显示一分钟之内的平均QT间期、QT间期状态一栏可实现间期预警，如果QT间期大于正常QT间期范围则状态颜色由绿色变成红色。用了一个100ms的定时器，每次100ms之后触发一次画图，让曲线往右移一格，由于100ms很短，所以在视觉上形成了连续移动的效果
The real-time rendering of the ECG curve is realized. The normal QT interval setting, the QT interval, the real-time display of the QR interval, the average QT interval in one minute and the QT interval state can realize the interval warning. If the QT interval is larger than the normal QT interval, the state color is turned from green to red. A 100ms timer is used, and a drawing is triggered every time after 100ms to move the curve to the right. Because the 100ms is very short, the effect of continuous movement is formed in the vision. (2018-05-20, matlab, 7KB, 下载1次)
用间断有限元方法求解二维Euler方程。
算例是一个圆柱绕流问题。压缩文件里面还包含了一个用MATLAB写的网格生成程
序，只需要做很小的改动就可以生成稀疏程度不同的网格。
程序还有些问题如下：
1. 因为没有对边界处作处理，所以计算的残差不会收敛到一个给定的小数，如
0.001等。当最大残差为0.1左右时，按下键盘上的ESC键，程序计算结束，会输出
一个文件Result.dat，用tecplot软件打开这个文件，可以得到一些结果，如流线
等。因为结果不收敛，在圆柱的后面会有两个涡出现，如果计算时间更长，会有
涡脱落的现象出现。如果想计算收敛，则需要对边界作特殊处理。处理方法见
2006年的文献High-order accurate implementation of solid wall boundary
conditions in curved geometries 。或者使用高阶的单元，如6节点三角形单元
。
2. 现在还不能捕捉激波，因为没有加限制器。
如果您在这个程序的基础上解决了上面提到的问题，请联系我，也共享一下程序
哦 ^_^
Send a written discontinuous finite element program--- for solving two-dimensional Euler equations
The attachment is a C language program I wrote it myself. Discontinuous finite element method for solving two-dimensional Euler equations.
Example is the flow around a cylinder. Zip file which also contains the mesh generation process to write a MATLAB
Sequence, just do small changes can generate sparse different grid.
The program also some problems as follows:
Because there is no boundary, so the residuals of the calculation will not converge to a given decimal, such as
0.001 and so on. When the maximum residual is about 0.1, press the ESC key on the keyboard, the program calculates the end, will output
A file Result.dat, the use tecplot software to open this file, you can get some results, such as flow lines
And so on. Because the result does not converge, there will be two in the back of the cylinder vortices appear, if the calculation of longer, there will be
Th (2012-04-23, matlab, 38KB, 下载83次)