PAST2

关于房屋贷款贷款的计算，包含本息、本金、一次性付款等贷款方式(Calculated on mortgage loans, including principal and interest, principal, and other one-time payment of loans)

牛顿插值和Neville插值、Taylor解常微分方程小程序供大家学习。(Newton Interpolation and Neville interpolation, Taylor, Xie Ordinary Differential Equations applet for everyone to learn.)

计算机模拟和蒙特卡洛方法，文件格式为pdg,主要介绍随机模拟方法(Computer Simulation and the Monte Carlo method, file format pdg, stochastic simulation method introduced)

FLUENT udf 更改S-A 湍流模型源项的程序(modify turbulence model S-A)

对信号的FFT（快速傅里叶变换）变换，针对LabView内部信号。(The signal FFT (Fast Fourier Transform) transformation, the internal signal for LabView.)

用fortran语言读取NC格式的数据,与大家分享，希望能够共同进步哈，谢谢(Used fortran language to read NC data format to share with you, hoping to make progress together Ha, thank you)

关于超声波倒车雷达测距的，最大信噪比的独立分量分析算法，小波包分析提取振动信号中的特征频率。( About ultrasonic parking radar ranging, SNR largest independent component analysis algorithm, Wavelet packet analysis to extract vibration signal characteristic frequency.)

说明：  借助python3计算偏微分方程组，并作出相应图形，代码简单易懂，方便修改(Calculate partial differential equations)

二维交错网格声波模拟（加PML边界条件）地震(Two-dimensional staggered grid acoustic simulation (plus PML boundary conditions) earthquake)

计算二维非问题油内热源问题导热，可以参考学习(Calculation of two-dimensional non thermal problems in oil heat conduction, you can refer to the study)