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最小二乘
说明: 最小二乘法寻找最佳函数匹配,用以数值计算,优化曲线(The least square method is used to find the best function matching for numerical calculation and curve optimization.)
- 2020-11-18 09:29:39下载
- 积分:1
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vehicle-bridge-coupled
ANSYS车桥耦合瞬态分析代码,实现车辆移动荷载加载(ANSYS-vehicle bridge coupled)
- 2016-12-17 09:41:07下载
- 积分:1
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3nodes
基于牛拉法的电力系统潮流计算,该程序是计算IEEE3节点的,采用matlab编程(Cattle Rafah-based power system load flow calculation, the program the calculation IEEE3 node, using matlab programming)
- 2020-12-17 21:29:12下载
- 积分:1
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femm
Finit element magnet method (FEMM) software
- 2012-11-23 03:31:23下载
- 积分:1
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shy1
自适应滤波器的LMS算法实现,主要实现滤波和算法的方法。(adaptive filter)
- 2011-05-18 14:49:17下载
- 积分:1
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Computational-Mechanics01
计算力学基础,中国科技大学精品教材,王秀喜,吴恒安编著(The basis of Computational Mechanics, University of Science and Technology of China, boutique textbook series)
- 2012-11-08 10:17:08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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多种评价方法的计算
说明: 包含马尔可夫预测、贝叶斯决策、模糊聚类分析、模糊综合评价方法等多种计算方法(Including Markov prediction, Bayesian decision-making, fuzzy clustering analysis, fuzzy comprehensive evaluation and other calculation methods)
- 2020-03-25 16:44:42下载
- 积分:1
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SUMT
内点惩罚函数法C语言程序,适用于机械行业机械优化设计(SUMT)
- 2020-12-14 11:59:14下载
- 积分:1
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1
说明: 数学建模工具箱
有丰富的数学建模模型,全部用matlab语言编写(Mathematical Modeling Toolbox)
- 2009-12-28 08:43:56下载
- 积分:1