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Aximn
说明: fortran弹塑性分析程序,很有用的啊!(fortran plastic analysis program, very useful)
- 2021-04-15 19:48:54下载
- 积分:1
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Semiparametric
半参数回归模型在测绘领域中的应用,先利用多期数据构建半参数回归模型,然后再预报未来多期数据(Semiparametric regression model applied in the field of surveying and mapping, the first use of multi-phase data to construct semi-parametric regression model, and then predict the future multi-phase data)
- 2013-07-12 16:22:14下载
- 积分:1
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GBAS
利用蚁群算法求解TSP问题,
从Location.dat文件输入每个城市的坐标。(The use of Ant Colony Algorithm for TSP problems Location.dat file input from the coordinates of each city.)
- 2009-06-18 09:08:14下载
- 积分:1
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zuixiaojiaocha
偏最小二乘法中的交叉有效性计算,看看,可能有用(PLS cross-validity of the calculation, see, may be useful)
- 2008-05-13 21:14:08下载
- 积分:1
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log
之前找不到合适精度的log2x函数的定点化源码,经过实现并验证后,发上来大家一起学习(fixed version for log2x)
- 2012-06-27 20:19:22下载
- 积分:1
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niudunfa
计算方法实验,通过编程实现埃特金加速法,一般迭代法,牛顿法的收敛次数的计算(calculated experiment, Programming Aitken acceleration method, the general iterative method, the convergence of Newton's method of calculating the number of)
- 2006-05-31 08:48:47下载
- 积分:1
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Riemann-solver
程序是关于计算两相黎曼问题的一个求解器。可以直接设置。(The code is a solver about the two-phase Riemann problem. the user can use it directly.)
- 2016-06-28 13:52:45下载
- 积分:1
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fitellipse(two-method)
我收集的老外编的椭圆拟合算法,C++实现,输入一组XY数据就能求出椭圆参数(I collected foreigner series the oval fitting algorithm, C++, achieve)
- 2020-10-16 09:17:29下载
- 积分:1
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222
一个仓本模型计算程序,用于计算奇异态和序参量(a program of kuramotto)
- 2021-03-10 22:29:26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