sw_pres

采用离散的数值方法，通过坐标转换并生成贴体网格系统，计算轴对称喷管流场(Discrete numerical methods, through coordinate transformation and generate body-fitted grid system, calculating axisymmetric nozzle flow)

NewtonIterative法计算方程的解(NewtonIterative calculated the solution of the equation)

lasso regression. It is very good to use for statics processing.

Fundamentals of matrix computations 矩阵运算的基础(Fundamentals of matrix computations)

1、根据所给的中国版图数据 绘制显示基于北京54坐标系的经纬度数据 编写兰勃特投影转换程序，转换上述数据，并显示 编写墨卡托投影转换程序，转换上述数据，并显示 同时，要绘制相对应的经纬网格，网格间距5度 2、根据所给的世界版图数据 绘制显示基于WGS84坐标系的经纬度数据 编写墨卡托投影转换程序，转换上述数据，并显示 计算北京(116.4，39.8)到巴黎(2.2, 48.52)的大圆轨迹，并显示 同时，要绘制相对应的经纬网格，网格间距5度(1, according to the Chinese territory given display data drawn based on latitude and longitude data write Beijing 54 coordinate system Lambert projection conversion process, the conversion of the data, and displays the write Mercator projection conversion process, the conversion of the data, and display the same time, Draw the corresponding latitude and longitude grid, the grid spacing of 5 degrees 2, according to the world map rendering display data written to the Mercator projection based on latitude and longitude data conversion program WGS84 coordinate system, the conversion of the data, and displays the calculation Beijing (116.4, 39.8) to Paris (2.2, 48.52) the great circle track and display the same time, to draw the corresponding latitude and longitude grid, the grid spacing of 5 degrees)

用于学习LBM对流体的研究，可以加深对LBM的理解(LBM fluid)

单纯形法找初始可行解，上课留的作业，希望对别人有点用吧(Simplex method to find an initial feasible solution , hope it is useful for others.)

对于PID算法给予了通俗易懂的讲解，有利于初学者快速掌握PID的要领(I give the PID algorithm the understandable explanation，which will help beginners to quickly master the PID essentials)

说明：  微分进化算法中的其中两个子程序，还有未上传(Differential evolution algorithm)

说明：  3跨每跨35米桥梁响应的车桥耦合程序，使用Fortran编写(3 cross each bridge 35 meters across the bridge coupling procedures to respond)