FLUENT-Y_Plus

三次样条插值函数实现 运行后画出曲线图，并得到插值函数表达式。(spline3)

室内无线定位技术，基于两次最小二乘法的matlab仿真程序(Indoor wireless positioning technology, based on the two least-squares method matlab simulation program)

说明：  共轭梯度法求解线性方程组,主要采用FR共轭梯度法(solve liner solutions from CG)

说明：  matlab 传感器异步融合仿真程序，目前File Exchange中一共有超过35000个文件，这两天我对这三万多份源代码和模型进行了统计整理，将其中下载量最高的前1000个文件信息及链接，收录到了微信小程序中。(Matlab sensor asynchronous fusion simulation program At present, there are more than 35,000 files in File Exchange. In the past two days, I have compiled and compiled these more than 30,000 source codes and models, and included the information and links of the top 1,000 files with the highest download volume in the WeChat applet.)

说明：  明尼苏达大学大牛G.V.Candler关于最近年来气动热、力的数值计算方面的总结，对该领域的学者有借鉴作用。(The Big Cow of University of Minnesota, G.V.Candler's summary on the numerical calculation of aerodynamic heat and force in recent years, which could be benifited for scholars in this field.)

用ANSYS软件命令流方式实现对于复合材料的分析(For composites analysis with ANSYS Software Command)

自己写了一个二维Euler方程的间断有限元程序 上次发了一个三角形单元的程序 因为不是曲边单元 所以在圆柱后面容易形成涡 现在把程序改为曲边四边形单元了 没有涡出现 单元是8节点四边形单元 节点编号顺序是 1 5 2 6 3 7 4 8 也就是四个角点依次 是1 2 3 4 然后是边的中点编号 5 6 7 8. 时间推进采用 Runge-Kutta 方法 数值通量采用全局Lax-Friedrichs通量 仍然不能捕捉激波 因为没有做重构或者加人工粘性 等这个做出来了 再发一次。 程序没有进行优化 比如说内存的消耗没有优化 比如直边单元的边界积分仍然采 用了曲边的积分方法 增加了计算量 比如面积分、线积分都是采用的是Gauss- Legendre-Lobatto积分 积分精度会比一般的Gauss-Legendre积分精度低一阶 等 等问题。 二维的 纯属交流性质 就没有考虑这些问题 ^_^ 如果物面全部是直边 那么只要改变一个参数N 就可以获得不同的计算精度 且具 有谱精度 因为单元的节点是Gauss-Legendre-Lobatto积分点。 其实就是谱元法 （物面是曲边的情况我不清楚是不是也可以通过提高基函数的阶数 也就是增加N 来提高计算精度）(Wrote a two-dimensional Euler equations with discontinuous finite element program Last made ​ ​ a triangular element of the program, not curved edge unit is so easy to form a vortex in the cylinder behind the Program to curved edge quadrilateral element vortices appear Unit is the order of 8-node quadrilateral element node number is 15,263,748 which is the four corners of the points in turn Is 1234 and then the side of the midpoint of the number 5678. Time promote the use of Runge-Kutta method Numerical flux of the overall situation of Lax-Friedrichs, flux Still can not capture the shock wave did not do the reconstruction or artificial viscosity do it Zaifayici. The program is not optimized for example, memory consumption is not optimized such as straight-edge boundary integral of the unit is still mining Integral method to increase the amount of computation such as surface integral with a curved edge, the line integral using the Gauss- The Legendr)

使用matlab进行 有限元计算，内含多种方式方法，欢迎交流讨论(Finite element calculation using matlab)

一个用于解决马尔可夫过程的源代码,很适合学习随机过程的同学1(a Markov process for the settlement of the source code, are very suitable for studying stochastic process a classmate)

用三元组表为结构，实现稀疏矩阵的加法并输出。(Achieve sparse matrix addition)