numerical-analysis

说明：  计算流体力学基础中的二维欧拉方程求解程序，对流项离散采用JST格式，时间离散采用显示 Runge-Kutta法。(To calculate the two-dimensional Eula equation solver in the basis of fluid mechanics, the flow item discrete is in JST format and the time discrete is shown runge-Kutta method.)

边界元法，可以求解外声场、内声场,在此基础上可以开发出快速边界元法(boundary element method for acoustic problem)

一个可以计算二维散射问题的矩量法程序(a calculation of the two-dimensional scattering Moment Method procedures!)

附件中是我用Fortran写的lorenz混沌吸引子的lyapunov指数谱产生程序。包括三部分内容：如何产生lorenz吸引子，详细注释，如何计算lyapunov指数谱。 需要的话也可以单独提取子程序中的四阶龙格库塔算法。 希望有所用。(Annex is written in Fortran I used the Lorenz chaotic attractor of lyapunov index spectrum generation process. Includes three parts: how to generate Lorenz attractor, detailed notes, how to calculate the spectrum lyapunov index. If necessary, extraction can also be a separate subroutine in the fourth-order Runge-Kutta algorithm. Would like to see used.)

划分网格一个开源的库，有限元的算法，很好用(Meshing an open source library = for finite element)

计算最短路径，可用于计算图论中最短路径的分析和求解(Calculate the shortest path)

说明：  适合初学者学习的fluent网格划分以及udf动网格(A fluent udf example)

用SVD奇异值分解法和阻尼最小二乘算法解决地球物理反问题，程序比较简单易懂(Using SVD, singular value decomposition method and damped least-squares algorithm to solve geophysical inverse problem, the procedure is relatively simple to understand)

用多重网格方法求解泊松方程，偏微分方程求解(use multigrid method to solve poisson equation, pde solver)

应用牛顿法的直角坐标系下的33节点潮流计算(33 node flow calculation)