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C_classical_src
平常练习的一些程序,比较基础,包括求斐波那契数、完数等等(Some of the usual practice procedures, more infrastructure, including seeking Fibonacci numbers, number, etc. End)
- 2013-11-18 21:18:19下载
- 积分:1
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Seqanaysiswithkalman
基于现代时间序列分析方法的多传感器观测融合Kalman滤波器与Wiener滤波器.NH格式论文。(time seq analysis with kalman and winner filter.)
- 2010-11-28 13:09:31下载
- 积分:1
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Romberg
数值分析,即计算方法课程中的龙贝格算法源代码。(Numerical analysis, calculation of the Romberg algorithm source code in the methods courses.)
- 2012-05-30 22:54:48下载
- 积分:1
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eptree112d
说明: 使用EPTREE可以很好的对,C,C++,Java代码进行解析。绘出函数树图,计算堆栈大小等。
<输出的文件内容>
功能树
INKURUDOFAIRUTSURI
测量若干步骤(有条件汇编)
函数索引(使用堆栈大小为每个功能输出)
使用类名单
全局变量,变结构,对象名单
#定义定义列表
清单中所使用
列表名称
信息分布函数的行数(EPTREE can be used for good, C, C++, Java code analysis. Mapping function tree diagram, calculate the stack size. )
- 2008-10-14 23:15:43下载
- 积分:1
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areaofcircle
一圆形游泳池如图所示,现在需在其周围建一圆形过道,并在其四周围上栅栏。
栅栏价格为35元/米,过道造价为20元/平方米。
过道宽度为3米,
游泳池半径由键盘输入。
要求编程计算并输出过道和栅栏的造价。(A circular pool as shown in figure, now in its built around to a circular corridor, and in its 4 around on the fence.
The fence for 35 yuan/m price, corridor cost for 20 yuan/square metre.
Aisle width is 3 meters,
The radius of the swimming pool by keyboard input.
Demand and output programming calculation of corridor and the cost of the fence.
)
- 2012-04-06 11:29:01下载
- 积分:1
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Cholesky
该程序是正定矩阵的Cholesky分解实例,Cholesky是矩阵分解常用的方法(The procedure is the Cholesky decomposition of positive definite matrix example, Cholesky matrix decomposition is a commonly used method)
- 2007-10-11 10:59:30下载
- 积分:1
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migration(FKaPS)
F-K域偏移法和相移法偏移程序(C语言)(FK domain migration method and the phase- shift method migration program (C language))
- 2021-04-06 20:59:02下载
- 积分:1
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NEWTONDIEDAI
用C++来实现NEWTON迭代法解非线性方程算法数值分析,是数值分析里典型的一个算法。(In C++ to achieve NEWTON iterative numerical algorithm for solving nonlinear equations, numerical analysis is in a typical algorithm.)
- 2011-10-09 21:58:54下载
- 积分:1
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zantaifenxi
非常实用的时域仿真法暂态分析工具,利用牛顿法求解系统的微分方程组和代数方程组,得到转子摇摆曲线,判断暂态是否稳定(Very useful time-domain simulation tool for transient analysis method, using Newton method for solving systems of differential equations and algebraic equations, the rotor swing curves, to determine the stability of transient)
- 2011-09-02 14:48:18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