teste_com_2

利用Crank-Nicholson算法的U型地埋管换热器出口水温动态模拟计算程序(The dynamic simulation method of U-tube ground heat exchanger(Crank-Nicholson method))

Imperialist Competition Algorithm - Source Code in MATLAB

本章先分析说明伪谱法求解波动方程的算法原理，再给出弹性波场伪谱法数值模拟的改进算法；然后，通过直接引入P波波场变量和S波波场变量，给出可实现弹性波场的P波和S波分解的波动方程，并用伪谱法实现弹性波场的P波和S波分解的数值模拟；最后用伪谱法对井间地震的复杂波场作数值模拟，分析井间地震波场中各种波的传播规律。(In this chapter, the principle of pseudo-spectral method for solving wave equation is analyzed, and then an improved algorithm for numerical simulation of elastic wave field is given. Then, by directly introducing P-wave field variable and S-wave field variable, the wave equation which can realize P-wave and S-wave decomposition of elastic wave field is given, and the P-wave sum of elastic wave field is realized by pseudo-spectral method. Numerical simulation of S-wave decomposition; finally, pseudo-spectral method is used to simulate the complex cross-well seismic wave field and analyze the propagation law of various waves in cross-well seismic wave field.)

matlab仿真模拟中的ode45的使用例程，文件代码是一个很好的ode45实验模板(ode45 matlab simulation in the use of routine, the file code is a good experimental template ode45)

matlab实现Butterworthlow低通滤波器仿真程序(matlab achieve Butterworthlow low-pass filter simulation program)

在MATLAB的运行环境下 傅里叶变换提取信号系数 相角 幅值(Operating environment in MATLAB Fourier transform to extract the amplitude of the signal phase angle coefficient)

绘制张量积H-Bezier曲面的matlab程序，不同于传统的Bezier曲面，H-Bezier曲面由纯双曲多项式定义。压缩包中，DrawHBezierSurf.m文件可运行，其中可以设置控制顶点和形状因子，可以更改控制网格的颜色。程序对任意m*n阶的H-Bezier曲面均适用。(Draw tensor product H-Bezier surfaces matlab program, unlike traditional Bezier surfaces, H-Bezier polynomial curve defined by pure hyperbolic. Compressed package, DrawHBezierSurf.m files can be run, where you can set control points and form factors, you can change the color of the control grid. Program for any m* n order H-Bezier surfaces are applicable.)

说明：  对初学matlab的学者，有着很好的指导作用，而且是ppt格式，易懂(How-to tutorials)

Program made in matlab for calculating matrices trough elemental matrix methood.

说明：  对信号类型的说明，并画出其相应的波形，求出信号的功率和能量。(Description of the type of signal, and draw the corresponding waveform, find the power and energy of the signal.)