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sod-problem-by-MacCormack
一维 问题,即激波管问题,是一个典型的一维可压缩无黏气体动力学问题,并有 解析解。对它采用二阶精度 两步差分格式进行数值求解。(Use MacCormack difference scheme for solving a two-dimensional shock tube problem)
- 2014-01-03 09:15:51下载
- 积分:1
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source
线弹性模型,可以对一般的弹性体通过abaqus进行验证使用(Linear elastic model)
- 2013-11-18 10:33:29下载
- 积分:1
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gravity_direct_problem
重力异常正演代码,请好好使用它。帮助学习。。。。(Gravity anomaly forward code, please use it well. Help learn)
- 2019-03-21 09:39:57下载
- 积分:1
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Dijkstra
求数组最长递增子序列算法。输入一个数组,输出其最大递增子序列(Array for the longest increasing subsequence algorithm. An array of input and output its maximum incremental sequence)
- 2007-08-07 16:14:13下载
- 积分:1
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Source1
ivf Fortran 有限元计算 一端固支 另一端自由移动的二维梁结构的振动(calculate the 2D beam vibration based on Finite Element Method in Fortran)
- 2014-06-04 20:49:30下载
- 积分:1
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PCA算法程序 pca
PCA算法程序设计步骤:
1、去均值
2、计算协方差矩阵及其特征值和特征向量
3、计算协方差矩阵的特征值大于阈值的个数
4、降序排列特征值
5、去掉较小的特征值
6、去掉较大的特征值(一般没有这一步)
7、合并选择的特征值
8、选择相应的特征值和特征向量
9、计算白化矩阵
10、提取主分量
(PCA algorithm programming steps: 1 to mean 2, calculation of covariance matrix and its eigenvalues and eigenvectors 3, the calculation of covariance matrix eigenvalues greater than the threshold number of 4, in descending order of eigenvalue 5, remove the smaller eigenvalue 6, remove the larger eigenvalue (usually not this step) 7, the combined choice of eigenvalues 8, select the appropriate eigenvalues and eigenvectors 9, computing whitening matrix 10, principal component extraction)
- 2021-03-09 13:09:27下载
- 积分:1
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error
有限元计算软件Nastran 运算出错时的所有错误列表,从标号1到22107.7。(FEM calculation error list of all software Nastran Error from grade 1 to 22,107.7.)
- 2013-12-03 23:55:42下载
- 积分:1
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PLS_NIPALS
非线性迭代偏最小二乘的MATLAB代码,可用于光谱数据的建模(MATLAB code of NIPLS)
- 2012-08-23 10:04:38下载
- 积分:1
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1111
通过对钢轨和车轮的ansys有限元建模,分析在钢轨的接头处的动力学特性。(Rail and wheel ansys finite element modeling, analysis of the dynamics of the rail joints.)
- 2012-08-16 08:56:38下载
- 积分:1
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01717763
说明: 这是简绍耦合矩阵的,为多通带的计算方法,可以方便的设计多通带微带滤波器,(This is Jane Shao coupling matrix for the multi-band calculation method, you can easily design multi-band microstrip filter)
- 2011-03-10 15:50:57下载
- 积分:1