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lu分解矩阵求逆... =========== 紫薯紫薯...(Matrix LU decomposition inversion)

说明：  有用的软件，用于高阶统计量计算。代码完整，计算效率高。(useful software for high-end statistical calculation. Code integrity, high computational efficiency.)

这是四阶的龙格库塔算法和lyapunov指数稳定性。(tihs is a runge kutta method )

用于求解一维气体动力学的欧拉方程代码，采用戈东诺夫格式，显式推进，可仿真非定常激波管(For solving one-dimensional Euler equations of gas dynamics code, using Godunov format, explicit advance, can simulate unsteady shock tube)

递推最小二乘法，辨识模型参数。。。。。。。。。(Least square method model identification)

ADINA 系统是一个单机系统的程序，用于进行固体、结构、流体以及结构相互作用的流体流动的复杂有限元分析。借助 ADINA 系统，用户无需使用一套有限元程序进行线性动态与静态的结构分析，而用另外的程序进行非线性结构分析，再用其他基于流量的有限元程序进行流体流动分析。此外， ADINA 系统还是最主要的、用于结构相互作用的流体流动的完全耦合分析程序（多物理场）。(ADINA System is a stand-alone system program for performing complex fluid flow finite element solid structure, and fluid structure interaction analysis. With ADINA system, users do not need to use a finite element program linear static and dynamic structural analysis, but with additional nonlinear structural analysis program, and then the other program flow based on finite element analysis of fluid flow. In addition, ADINA system or main, fully coupled analysis program for fluid flow structure interaction (multi-physics).)

有限元二维静力计算程序，采用四节点线性单元，可以显示变形和应力云图。(Finite element analysis program for 2D problems)

说明：  自适应步长龙格库塔法求解常微分方程，main.c内容根据自己需要改变，待求解方程为derivs，需要使用者自己编写(Adaptive step size Runge Curta Fa for solving ordinary differential equations)

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!)

圆柱绕流边界元程序 用边界元的方法计算圆柱绕流(flow around colomn )