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B_ADI
说明: ADI method for solving PDE equations
- 2019-01-02 15:37:35下载
- 积分:1
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SA_MDVRP
程序是采用SA方式求解MDVRP问题,先对MDVRP问题进行分组,将其转化成SDVRP问题,然后采用SA算法进行计算。(this program is used to solve MDVRP problem by SA.)
- 2020-08-13 16:58:29下载
- 积分:1
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CS_OMP_my_final
CS算法OMP该进算法,对傅里叶与 的信号进行稀疏采样(Compressive Sensing OMP)
- 2013-10-22 18:36:26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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Time-Series-Analysis-in-R-
时间序列分析及应用:R语言
(2011汉译版,英文第2版)随书程序与数据集及勘误表(Time Series Analysis with Applications in R by Jonathan D. Cryer and Kung-Sik Chan
)
- 2013-04-26 13:30:01下载
- 积分:1
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Lagrange
使用拉格朗日乘子法解约束优化问题,例子是最优化问题,有3个线性约束(Using the Lagrange multiplier method to solve the constrained optimization problem)
- 2018-04-06 15:42:47下载
- 积分:1
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hb888
有较好的参考价值,外文资料里面的源代码,基于小波变换的数字水印算法matlab代码。( There are good reference value, Foreign materials inside the source code, Based on wavelet transform digital watermarking algorithm matlab code.)
- 2017-04-12 18:09:25下载
- 积分:1
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45095smoothing
这个帖子中我想讨论的是移动窗口多项式最小二乘拟和平滑方法,粗糙惩罚方法,以及kernel平滑方法。(Posts in this discussion I think are moving window least squares polynomial fitting smoothing method, crude methods of punishment, as well as the kernel smoothing method.)
- 2009-03-20 14:20:09下载
- 积分:1
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hen_qg73
利用matlab针对图像进行马氏距离计算 ,LDPC码的完整的编译码,线性调频脉冲压缩的Matlab程序。( Using matlab to calculate the Mahalanobis distance for the image, Complete codec LDPC code, LFM pulse compression of the Matlab program.)
- 2017-05-18 19:17:04下载
- 积分:1
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Source1
ivf Fortran 有限元计算 一端固支 另一端自由移动的二维梁结构的振动(calculate the 2D beam vibration based on Finite Element Method in Fortran)
- 2014-06-04 20:49:30下载
- 积分:1