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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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farContral
远程控制小系统,用VC实现,在VC6.0下编译通过(small remote control system, with VC in the next compile VC6.0)
- 2007-04-17 08:44:19下载
- 积分:1
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LED
旋转LED的实现,实现用单片机控制电机转速,采用无线供电方式哦(Rotate the LED, achieving MCU control motor speed, the use of wireless power supply oh)
- 2013-11-03 18:25:32下载
- 积分:1
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hpcv-water-29-oct-2010
OSG实例,shader编程,实现简单的小溪河流定向移动(OSG , shader programming, achieve a simple directional movement of rivers )
- 2020-09-13 17:27:58下载
- 积分:1
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c# SECS HSMS编程
关于半导体SEMI SECS SECS-I SECS-II GEM HSMS的一个程序,采用SEMI E37的协议规格编程,来完成和半导体生产设备的通讯
- 2023-03-25 11:50:03下载
- 积分:1
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i2c
说明: I2C测试程序,实现控制板与存储器之间的读写操作,有利于初学者对I2C的了解与学习(I2C test program, to achieve read and write operations between control board and memory, is conducive to beginners' understanding and learning of I2C.)
- 2018-04-20 13:45:12下载
- 积分:1
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编程之美 源代码
这就是找工作面试,笔试的神器编程之美的源码,里面的源码,本人也看过用过学过,觉得非常的好,希望能够上传上来和大家共享,一起努力找一份好的工作!
- 2022-01-26 06:05:23下载
- 积分:1
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programming-of-VC-network
VC网络高级编程很好很全面的网络编程书籍(High-level programming of the VC network)
- 2012-08-14 10:32:20下载
- 积分:1
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chengxu
参数变化对最小相位系统的影响,动态矩阵算法(DMC)仿真实例。(Effects of parameter changes on the minimum-phase system。Dynamic matrix algorithm (DMC) simulation.)
- 2013-12-27 13:59:53下载
- 积分:1
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HT1621_LCDDriver
说明: 对HT1621的驱动,提供C及汇编代码,
注有详细的代码说明,在C51,PIC上测试OK,
绝对有用。(The driver of the HT1621 to provide C and assembly code, annotated with detailed code instructions, in the C51, PIC test OK, not in vain.)
- 2010-04-10 12:22:06下载
- 积分:1