lsmd

故障频率计算程序，计算轴承各部件的故障频率(Failure rate calculation program to calculate the bearing parts of the fault frequency)

实现用fluent udf自定义k~e方程(Define the k~e equation by using fluent udf function.)

这是利用FFT分析相位差的程序，具有一定的参考价值！(This is done using FFT analysis phase of the program, has a certain reference value!)

高斯消元法、高斯列主元消元法解线性方程组。程序由本人独立完全独立完成。版权所有！(Gaussian elimination method out PCA Gaussian elimination method for solving linear equations. I am independent program consists entirely independently. All rights reserved!)

二维交错网格SIMPLE算法fortran计算程序，包括主程序和用户定义程序。(The two-dimensional to SIMPLE algorithm the fortran calculation procedures staggered grid, including the main program and the user-defined procedures.)

数值分析算法，该压缩包含有雅克比迭代算法、弦割法法及综合评测法等(Numerical analysis algorithms, the compression Jacobi iteration algorithm, France and France chord cutting and comprehensive evaluation method)

说明：  三角网格以及矩形网格剖分. 实现等参单元以及误差L H 范数收敛阶估计.(Triangular meshes and rectangular meshes are subdivided to achieve convergence order estimation of error L H norm.)

the structure of the DG-FEM is very similar to that of the finite element method (FEM), there are several fundamental differences. In particular, the mass matrix is local rather than global and thus can be inverted at very little cost, yielding a semidiscrete scheme that is explicit. Furthermore, by carefully designing the numerical flux to reflect the underlying dynamics, one has more flexibility than in the classic FEM to ensure stability for wavedominated problems. Compared with the FVM, the DG-FEM overcomes the key limitation on achieving high-order accuracy on general grids by enabling this through the local element-based basis

求解一元三次方程的Fortran源代码，自己试了试，可以用(Fortran source code for the three equation of a dollar, you can try, you can use)

使用梯度下降法、随机梯度下降法和牛顿法实现的逻辑回归算法。(Using a gradient descent method, stochastic gradient descent algorithm logistic regression method and Newton' s method to achieve.)