像差计算

OOFEM是一个开源多物理并行有限元程序的面向对象的架构。这个项目的目的是提供高效率和强大的有限元计算工具，以及提供高度模块化和可扩展性的发展环境。(OOFEM is an object oriented architecture of an open source multi - Physical parallel finite element program. The purpose of this project is to provide efficient and powerful finite element computing tools and to provide a highly modular and extensible environment for development.)

说明：  一个基于有限元方法的平面问题求解器，支持网格类型为二维四边形四节点单元和四边形八节点单元的有限元网格： 前处理——用Abaqus建模编号并导出数据 在Matlab中读取数据文件 计算单元刚度矩阵（采用高斯积分），组集结构刚度矩阵 组集结点载荷向量，引入位移边条 求解结点位移，单元应力应变 后处理——绘制应力应变位移云图，与Abaqus结果对照(A plane problem solver based on finite element method)

计算不同高度下大气湍流对空间光到单模光纤的耦合效率。(The coupling efficiency of space to single-mode fiber in the atmospheric turbulence is calculated at different heights.)

说明：  实现快速分数阶傅里叶变换功能。分数阶傅里叶变换是整数傅里叶变换的普遍形式，可用于光的菲涅尔衍射模拟。(The function of fast fractional Fourier transform is realized. Fractional Fourier transform is a general form of integer Fourier transform, which can be used to simulate Fresnel diffraction of light.)

说明：  对Rsoft仿真数据进行调用处理，更清晰绘制所得结果(Call and process the Rsoft simulation data, and draw the results more clearly.)

说明：  通过matlab仿真偶极子声场的指向性，在极坐标下作图画出指向性(The directivity of dipole sound field is simulated by MATLAB, and the directivity is drawn in polar coordinates)

说明：  利用matlab对轴系当量模型扭转振动的振型和频率进行计算(Calculation of torsional vibration modes and frequencies of shafting equivalent model by MATLAB)

用于模拟量子光学多类问题，求数值解的程序包(A program package for numerical simulation of quantum optics)

高斯扩散模式适用于均一的大气条件，以及地面开阔平坦的地区，点源的扩散模式。排放大量污染物的烟囱、放散管、通风口等，虽然其大小不一，但是只要不是讨论烟囱底部很近距离的污染问题，均可视其为点源。(The Gauss diffusion model is applied to homogeneous atmospheric conditions, as well as to ground open flat regions, and to point source diffusion patterns. Chimneys, pipes, vents, etc. that emit large quantities of pollutants, although they vary in size, can be regarded as point sources as long as they do not discuss the pollution problems near the bottom of the chimney.)

分层的一维热传导方程的有限差分法MATLAB程序，是简单的显式差分格式，尽量使用了矩阵运算，没有符号运算。 文件chafen1.m以路面为例，假设有多层建筑材料，热传导系数已经在代码中给出。用户使用时请按自己需要修改chafen1.m文件，增减层数，修改热传导系数等即可。(One-dimensional heat conduction equation finite difference method MATLAB program, is a simple explicit difference format, as far as possible use of matrix operations, no symbolic operations The file Chafen 1.m takes the road surface as an example, assuming that there are multiple layers of building materials, the thermal conductivity is given in the code. Users should modify the Chafen 1.m file according to their own needs, increase or decrease the number of layers, modify the thermal conductivity and so on.)