Fortran-Algorithms

test1.txt 第一列为时间t，0.001s为步长；第二列为系统的输入信号；第三列为系统的输出信号。 signal_analyzer.m首先将test1.txt 的数据读入workspace，然后进行FFT，分析出两信号的频率，输出对于输入的幅值衰减（db），输出对输入的相位差。(test1.txt the first time as t, 0.001s for the step the second as the system input signal the third as the system output signal. signal_analyzer.m first test1.txt data read workspace, and then proceed to FFT, analysis of the two signals in the frequency, the output for input amplitude attenuation (db), the output of the input phase difference.)

偏微分方程数值解上机实习 运用古典显式差分格式求解二维扩散方程的初边值问题 运用P-R差分格式求解二维扩散方程的初边值问题

有限元编程做网格划分的，对于从事有限元分析的比较有用(Programming the finite element mesh to do the, for finite element analysis of the more useful)

考虑地球J2项摄动的轨道积分器，变步长，基于龙格库塔78阶，(orbital integrator considering the J2 pertubation, based on the Runge-Kutta 78 integrator, use automatic step control)

说明：  Matlab；金融计算；var计算；cvar计算 [VaR&&CVaR] VAR，CVAR详细介绍，并附带各种方法计算，matlab程序实现，仿真结果图展示。 [Matlab和金融计算] Matlab实现金融计算，并附带蒙特卡洛实现。([VaR&&CVaR] Var, cvar are introduced in detail, as well as various methods of calculation, and matlab program calculation is included, and the results are displayed in graphs. [Matlab and financial calculations] Matlab implements financial calculations with Monte Carlo implementation.)

计算fluent相变的udf模型，包括气相到液相，液相到气相的双向传递。(Calculate the udf model of fluent phase transition)

matlab的adi方法求解偏微分方程，精确度较高(ADI method of MATLAB for solving partial differential equations)

很好的算法，可广泛用于各行业（如工控）计算组态(It s a very good arithmetic that can be used at many industries.such as industry control,for caculation configuration.)

fluent中用于修改湍流粘度系数的自定义函数(udf to modify turbulence viscosity coefficient in fluent)

正交实验中的极差分析代码，确定因素的优水平和最优水平组合，给出指标趋势图。(Orthogonal experiment range analysis code to determine the factors that the optimal level of excellent level and combination of indicators of trends is given.)