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wedg140
fortran程序,计算应力强度因子和特征值和特征向量,研究多种材料接触(fortran program)
- 2014-09-22 10:47:40下载
- 积分:1
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bchcode
实现了bch编码,基于有限域多项式除法,自己动手写的,大家可以看下(Based on division in galois field,relize the BCH code )
- 2013-07-25 10:27:37下载
- 积分:1
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LU-SGS
利用时域有限差分求解CFD问题,其中差分格式为LUSGS,是求解流体问题的理论基础(Solved using finite-difference time-domain CFD problems, in which the differential form LUSGS
)
- 2011-12-15 22:43:30下载
- 积分:1
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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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FENZHI
分支界限费用矩阵的说明文档,非常实用,建议下载哦(Branch line cost matrix documentation, very practical, it is recommended to download Oh)
- 2013-09-13 14:24:50下载
- 积分:1
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Fourier-Mellin-based-Image-Registration
此为基于图像配准的傅立叶变换源代码,已精心调试过,请放心使用.(This is the image registration based on the Fourier Transform source code, has been painstakingly debugging, please rest assured that use.)
- 2007-07-31 19:42:50下载
- 积分:1
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矩阵转置
说明: 运用数组,指针,通过最简单的c语言完成矩阵的转置计算。(Using array, pointer, through the simplest c language to complete the matrix transpose calculation)
- 2020-04-19 13:57:43下载
- 积分:1
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DosBigMath
实现1到1000位的大数运算(包括加减乘除和浮点数运算),运行环境是vs2005(1-1000, large number operations (addition, subtraction and floating-point), the operating environment is vs2005)
- 2012-05-26 21:15:29下载
- 积分:1
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generalJacobianMatrix
6自由度自由漂浮空间机械臂运动学建模,广义雅克比矩阵(6 degrees of freedom of the free-floating space manipulator kinematics modeling, generalized Jacobian matrix)
- 2020-12-30 16:58:59下载
- 积分:1
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transient-conduction
非定常导热,附件包含3个源代码。分别对应着FTCE、BTCS和紧致格式的程序代码(unsteady conduction)
- 2012-01-01 10:05:22下载
- 积分:1