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kalman
卡尔曼滤波的源程序,卡尔曼滤波是以最小均方误差为估计的最佳准则,来寻求一套递推估计的算法。它适合于实时处理和计算机运算。
(Kalman filtering of source code, Kalman filter based on minimum mean square error for estimating the best criteria to search for a recursive estimation algorithm. It is suitable for real-time processing and computing.)
- 2008-05-20 22:16:52下载
- 积分:1
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pls2
代码为偏最小二乘法计算过程的代码,主要部分都有中文解释(Code for the calculation process of partial least squares method)
- 2020-06-24 00:40:02下载
- 积分:1
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19864062MatrixOper
对于协方差矩阵的一种计算方法,对于地震中的反演约束算法能起到很好的作用。(For a kind of covariance matrix calculation method)
- 2011-05-30 13:43:06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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Wdisp
Wdisp,是基于建造结构计算软件pkpm的结果数据提取文件,方便使用,提取数据后,可用于绘制曲线。(Wdisp, is based on The construction structure calculations software pkpm the results of data extraction files, easy to use, extract data, can be used to draw the curve.)
- 2013-04-08 15:34:48下载
- 积分:1
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第一章作业
分别以单精度和双精度数据类型用以下近似算法分别计算π的近似值,要求结果具有4位有效数字(calculate pi with single-precision and double-precision respectively)
- 2021-03-17 18:19:21下载
- 积分:1
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pulsewidth
计算傅里叶变换程序,输入光谱,计算其傅里叶变换极限(Computing the Fourier transform procedure, the input spectra, calculate the Fourier transform limit)
- 2012-08-14 18:58:12下载
- 积分:1
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pdesolve
偏微分方程数值解法的程序包,包括拉普拉斯方程、对流方程和扩散方程的各种解法(Numerical Solution of Partial Differential Equations package, including the Laplace equation, convection-diffusion equation equation and the various solution)
- 2009-03-22 19:39:32下载
- 积分:1
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Colonial_Competitve_Algorithm_CCA_v4
Colonial Competitive Algorithm
- 2009-05-12 17:58:40下载
- 积分:1
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NONLINEAR-FINITE-ELEMENT-AND-PROGRAM
非线性有限元及程序这本书,很有用的,程序也很全面(NONLINEAR FINITE ELEMENT AND PROGRAM)
- 2021-03-31 10:19:09下载
- 积分:1