xiankuan

一维的N_S方程的求解程序，是计算流体力学的算例(the N_S equation of one dimension .)

说明：  气泡上浮实验，基于fluent的二维模型(Bubble Floating Experiment)

很有用的一篇国外关于FDTD算法的学术论文，相信对初学者有很大帮助(Useful in a foreign academic papers on the FDTD method, I believe very helpful for beginners)

录音程序，音频录音fft程序，并加界面显示(radio record code)

流体力学SIMPLE算法（C语言编程实现）需自己设定边界条件(SIMPLE algorithm)

α-β-γ滤波函数，可实现对等间隔的观测数据进行滤波估计。(α-β-γ filter function design by C language. Complete the filter evaluation function for equidistant discrete data.)

模拟波动方程的有限元程序，计算波场快照，有程序说明！(Simulation of the wave equation, the finite element program, calculate the wave field snapshot, procedural instructions)

Orthogonal Polynomials Approximation 数值分析，计算正交基多项式的系数 (Given a function f and a set of m >0 distinct points . You are supposed to write a function to approximate f by an orthogonal polynomial using the exact function values at the given m points with a weight assigned to each point . The total error must be no larger than a given tolerance. Format of function int OPA( double (*f)(double t), int m, double x[], double w[], double c[], double*eps ) where the function pointer double (*f)(double t) defines the function f int m is the number of points double x[] contains points double w[] contains the values of a weight function at the given points x[] double c[] contains the coefficients of the approximation polynomial double*eps is passed into the function as the tolerance for the error, and is supposed to be returned as the value of error. The function OPA is supposed to return the degree of the approximation polynomial. Note: a constant Max_n is defined so that if the total error is still not small enough when n = Ma)

经典非线性动力学模型，布鲁塞尔子模型，可直接运行，运算效率高。(nonlinear dynamics Brusselator model)

频率响应函数计算程序,通过输入结构的响应数据，识别结构的模态参数，matlab(frequency response function，)