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根据X和Y两组数据，将两组数据在X-Y平面上最小二乘法拟合出圆(According to X and Y two sets of data, the two sets of data in the X-Y plane, the least square method of fitting the circle)

C-N解偏微分方程的程序。解的是定步长的抛物型偏微分方程： du/dx - a * d2u/dx2 = 0 在程序中可以更改 a 的值以实现不同系数的解。在循环中改变 a 的值以实现变系数. 该说明在压缩包是也有(CN solution of partial differential equations procedures. Solution is scheduled to step parabolic partial differential equation: du/dx- a* d2u/dx2 = 0 in the procedure can be changed in order to realize the value of a different coefficient of the solution. Change in the cycle in order to realize the value of a variable coefficient. The note in the compressed packet is also)

求解非线性方程组的NewRaphson方法(Solving nonlinear equations NewRaphson method)

扩展有限元软件包,用于模拟连续介质裂纹的萌生与扩展(XFEM simulation code written in MATlab)

计算给定序列的沃什(Walsh)变换序列。(Calculation of a given sequence of Vas (Walsh) transform sequence.)

eof分析，关于气象方面的经验正交函数分析，eof.f90 作降水的eof分解(eof analysis, empirical orthogonal function analysis of the meteorological aspects eof eof.f90 for precipitation, decomposition)

代数涡粘模型用于计算近壁湍流的速度场，1D 4阶RK 积分(Algebraic eddy viscosity model is used to calculate the near-wall turbulence velocity field, 1D 4-order RK integration)

利用支路追加法求阻抗矩阵,解：输入数据如下: 请输入节点数:n=a 请输入支路数:nl=b 请输入由支路参数形成的矩阵: B=[i j z bc t it ......]其中ij为支路端点，z为支路阻抗，bc为对地电容，t为变压器变比，it表示i端点是否与变压器直接相连。 (Seek additional method using branch impedance matrix)

基于matlab计算流体力学(CFD)源代码。(Matlab-based computational fluid dynamics (CFD) code.)

自信车轮压力分析 python 源代码 有限元分析(Wheel of bike ，python Finite Element code)