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Sphere
三维数据点拟合空间球体的算法，利用最小二乘法实现空间球的拟合。(3D data points fitting the space sphere algorithm using the method of least squares fitting space ball.)
- 2013-01-09 10:30:52下载
- 积分：1
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4-split2
说明： 给定求解区间，用最小二乘法给出函数的零点，并给出迭代次数(Given the solution interval, the zeros of the function are given by the least square method, and the number of iterations is given.)
- 2019-04-10 16:33:03下载
- 积分：1
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UMAT_Hashin3D
基于ABAQUS的三维hashin准则算法(A three-dimensional hashin standard algorithm based on ABAQUS)
- 2021-04-18 20:58:51下载
- 积分：1
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htm
大量数值分析常见算法的源程序 如解方程组 插值等 可以用浏览器打开的HTM文件，内部使用C开发(A large number of numerical analysis algorithms common source such as the solution of equations interpolation can be used to open the browser)
- 2011-10-21 14:10:23下载
- 积分：1
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gap-width-and-JRC
计算岩石表面裂隙宽度并求取其表面粗糙度系数(Calculate the rock surface crack width and strike the surface roughness coefficient)
- 2016-02-18 03:01:04下载
- 积分：1
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CAPE
cape是计算对流有效位能和对流抑制能的一个fortran。广泛应用在大气科学计算大气垂直速度的诊断分析中。(cape is the calculation of CAPE and convective inhibition energy of a fortran. Widely used in calculation of the vertical velocity of atmospheric science and diagnostic analysis.)
- 2010-05-08 11:08:04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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top-ten-algorithms-of-mathematical
自己在各个论坛上搜集的十大算法，Dijkstra算法，Floyd算法，动态规划，分治算法，概率算法，灰色预测，聚类算法，蒙特卡洛，模拟退火算法，神经网络等等，附有算法的原理，部分含有相关的程序源代码。(In various forums to collect the ten algorithms, Dijkstra algorithm, the Floyd algorithm, dynamic programming, divide and conquer algorithms, probabilistic algorithms, gray prediction, clustering algorithms, Monte Carlo, simulated annealing, neural networks, etc., accompanied by the algorithmthe principle, in part contain the source code.)
- 2012-05-08 10:47:43下载
- 积分：1
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84d614758d1d
fft 利用DSP Builder 在MATLAB下产生的模型(DSP Builder fft using the model generated in MATLAB)
- 2014-01-17 14:07:24下载
- 积分：1
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well_fft
实现了测井数据的fft变化分析，可以用于查看测井数据的频谱特征(Realize the logging of data changes fft analysis, can be used to view the logging data of spectrum characteristics of)
- 2008-04-19 13:04:10下载
- 积分：1
