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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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CCU6
很适合英飞凌单片机的初学者,可作为初学者的很好的参考资料。(Infineon microcontroller is suitable for beginners, as a good reference for beginners.)
- 2015-02-04 09:39:57下载
- 积分:1
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Processorscheduling
用优先级判断的处理器调度模拟程序,程序运行时间结束后结束。(Used to determine the priority of processor scheduling simulation program, after the close of the program is running.)
- 2013-12-03 23:24:30下载
- 积分:1
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NearWay
说明: 在高速公路紧急救援系统中最基本、最关键的问题就是最短路径问题。“最短路径",顾名思义就是在所有路径中找到一条距离最短的路径,保证事故发生时救援资源能以最快的速度到达事故点,同时也能以最快的速度从事故点到达具备后续救援条件的救援点,达到及时救援处理的目的。(In the emergency rescue system of expressway, the most basic and key problem is the shortest path problem. "Shortest path", as the name implies, is to find the shortest path among all the paths to ensure that the rescue resources can reach the accident point at the fastest speed when the accident occurs, and can also reach the rescue point with follow-up rescue conditions at the fastest speed from the accident point, so as to achieve the purpose of timely rescue and treatment.)
- 2020-07-05 21:02:45下载
- 积分:1
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PB375A-SDK
usb-sd卡-tf卡-U盘等方案开发手册,从网上收集的,包括原理图和程序(usb-sd card-tf the Card-U disk program development manual, collected from the Internet, including schematics and procedures)
- 2020-10-30 18:59:55下载
- 积分:1
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matlab-and-vcPP
将matlab与vc++结合各自发挥特长,实现强大的界面控制的数字图像处理功能。(Matlab and vc++ respective strengths, powerful interface control digital image processing functions.)
- 2013-05-01 10:56:23下载
- 积分:1
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OCT
光学相干断层扫描技术(OCT)在眼科治疗中的应用(Optical coherence tomography (OCT) applications in ophthalmology Treatment)
- 2021-04-14 15:28:55下载
- 积分:1
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服务器
说明: 1)分页环境
Xshell标签可以脱离原来的窗口并重新创建一个新窗口或重新连接一个完全不同的窗口。另外,单个的窗口可以垂直或水平分割,从而使一个窗口显示多个终端会话。
2)动态端口转发
系统管理员经常必须使用多个远程主机,并沉闷的一遍又一遍的执行重复的任务。使用新的同步输入重定向特性,所输入的东西能够同时发送到多个所选择的终端。
3)自定义键映射
终端密钥和文件菜单可以被映射到用户偏爱的键位,你甚至可以映射一个用来启动应用程序或脚本的键。
4)用户定义按钮
通常,用户必须多次重复输入相同的字符串。而xshell只需要点击按钮就可以完成重复字符串命令的输入,快速命令能够节省很多时间。
5)VB脚本(XShell, free and safe download. XShell latest version: Free terminal emulator for personal and professional use. XShell is an Internet & Network)
- 2020-06-25 14:40:02下载
- 积分:1
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glmark2
说明: glmark2 测试对象是NVIDIA drive板子。
发现这个跑分软件对于强大的NVIDIA板子而言,没有占用太多资源。(Glmark2 is a popular open source GPU benchmarking tool with OpenGL2 2.0 and OpenGLES 2.0 support, available for Linux and Android platform.
It is developed with a goal of easy and effective GPU benchmarking for ARM hardware in embedded systems by the Linaro team.
Glmark2 binary packages are available in official Ubuntu repository, but not available in Debian repository, so we have to compile and install latest glmark2 form its git repository.)
- 2019-11-11 09:39:21下载
- 积分:1
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很简单的一个任务管理工具,任务有紧急/重要之分.
很简单的一个任务管理工具,任务有紧急/重要之分.-A mission is very simple management tools, mission have emergency/important points.
- 2022-07-15 19:07:02下载
- 积分:1