Pattern_recognition1

说明：  相变UDF，包括质量传递和热量传递，能够进行气液相变的模拟(Phase transition UDF, including mass transfer and heat transfer, gas-liquid phase transition can be simulated)

14节点牛拉算法计算潮流程序，用于电力系统的潮流计算程序，可以直接用于潮流计算，也可以用于学习潮流计算的流程和方法。(For power flow calculation program, can be used directly flow calculation can also be used to study flow calculation processes and methods.)

说明：  最小二乘法拟合曲线的一个小程序，采用C++程序，(Least-squares fitting curve C++ program)

利用OPENMP实现矩阵相乘的C程序。Demonstrates a matrix multiply using OpenMP.()

我收集的老外编的椭圆拟合算法，C++实现，输入一组XY数据就能求出椭圆参数(I collected foreigner series the oval fitting algorithm, C++, achieve)

该程序是利用GIvens变换进行矩阵的QR分解(The program uses GIvens transform to solve QR matrix.)

任意数学表达式计算的源码及测试软件 (Calculation of arbitrary mathematical expression of the source code and test software)

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 .)

北京航空航天大学数值分析大作业第二题，有难度，这可是历年北航研究生转载最多的代码了(Beijing University of Aeronautics and Astronautics numerical analysis of large operating the second question, there is difficulty, this is the most over the years Beihang University Graduate reproduced the code)

说明：  ABAQUS 的二次开发,详细注释说明，自学ABAQUS的二次开发(ABAQUS secondary development, detailed notes, self-study ABAQUS secondary development)