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Euler_DG_Quadrilateral_2D
自己写了一个二维Euler方程的间断有限元程序
上次发了一个三角形单元的程序 因为不是曲边单元 所以在圆柱后面容易形成涡
现在把程序改为曲边四边形单元了 没有涡出现
单元是8节点四边形单元 节点编号顺序是 1 5 2 6 3 7 4 8 也就是四个角点依次
是1 2 3 4 然后是边的中点编号 5 6 7 8.
时间推进采用 Runge-Kutta 方法
数值通量采用全局Lax-Friedrichs通量
仍然不能捕捉激波 因为没有做重构或者加人工粘性 等这个做出来了 再发一次。
程序没有进行优化 比如说内存的消耗没有优化 比如直边单元的边界积分仍然采
用了曲边的积分方法 增加了计算量 比如面积分、线积分都是采用的是Gauss-
Legendre-Lobatto积分 积分精度会比一般的Gauss-Legendre积分精度低一阶 等
等问题。 二维的 纯属交流性质 就没有考虑这些问题 ^_^
如果物面全部是直边 那么只要改变一个参数N 就可以获得不同的计算精度 且具
有谱精度 因为单元的节点是Gauss-Legendre-Lobatto积分点。 其实就是谱元法
(物面是曲边的情况我不清楚是不是也可以通过提高基函数的阶数 也就是增加N
来提高计算精度)(Wrote a two-dimensional Euler equations with discontinuous finite element program
Last made a triangular element of the program, not curved edge unit is so easy to form a vortex in the cylinder behind the
Program to curved edge quadrilateral element vortices appear
Unit is the order of 8-node quadrilateral element node number is 15,263,748 which is the four corners of the points in turn
Is 1234 and then the side of the midpoint of the number 5678.
Time promote the use of Runge-Kutta method
Numerical flux of the overall situation of Lax-Friedrichs, flux
Still can not capture the shock wave did not do the reconstruction or artificial viscosity do it Zaifayici.
The program is not optimized for example, memory consumption is not optimized such as straight-edge boundary integral of the unit is still mining
Integral method to increase the amount of computation such as surface integral with a curved edge, the line integral using the Gauss-
The Legendr)
- 2021-01-29 12:58:40下载
- 积分:1
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foxtrader
foxtrader c language interfaces
- 2013-06-05 16:58:51下载
- 积分:1
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20103521287041
说明: XP控件库,有一定参考价值 资源类别:
VC源码¦用户界面
文件大小:
170KB
(XP Control Library, a certain reference value resource categories: VC Source ¦ user interface file size: 170KB)
- 2011-04-11 21:39:02下载
- 积分:1
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digital-compress-design
详细描述了基于ADSP-21262的数字压限器的设计,给出了算法流程,可以根据其描述进行实现(A detailed description of the ADSP-21262 digital limiter based design, flow chart of the algorithm is given, according to the description of implementation)
- 2014-07-15 15:53:22下载
- 积分:1
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ImageViewer
ImageView: This is an image viewer program
- 2010-07-05 18:07:05下载
- 积分:1
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DialUp-modem
用MODEM拨号程序(using dial-up procedures MODEM)
- 2005-03-11 13:46:42下载
- 积分:1
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ns2-analysis-code
ns2网络仿真的实例以及对应测试分析代码,含有时延,抖动,丢包率等(ns2 network simulation examples and counterparts test analysis code, containing latency, jitter, packet loss rate etc.)
- 2009-02-27 21:08:56下载
- 积分:1
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time
调用时间及日期函数,在对话框上显示当前时间及当前日期。(Call time and date function, in the dialog box displays the current time and the current date.)
- 2013-08-17 09:10:09下载
- 积分:1
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GraphTheory
讲述数据机构的图论部分和程序设计的关系,适合学习算法的同学学习阅读,很不错的一本书。(Graph theory algorithm and programming)
- 2013-12-04 20:12:39下载
- 积分:1
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Kriging
3d 或者 2d 等值线 创建 标注 工程 模拟 实际温度场 或者 其他场(3D or 2D contours create a callout engineering simulating actual temperature or other fields
)
- 2012-01-07 10:20:00下载
- 积分:1