▍1. rungekutta
说明: 用于非线性常微分方程的解的重要的一类隐式或显式迭代法,使用龙格库塔计算激光器的速率方程。(An important class of implicit or explicit iterative methods for solving nonlinear ordinary differential equations is to use Runge Kutta to calculate the rate equations of lasers.)
说明: 用于非线性常微分方程的解的重要的一类隐式或显式迭代法,使用龙格库塔计算激光器的速率方程。(An important class of implicit or explicit iterative methods for solving nonlinear ordinary differential equations is to use Runge Kutta to calculate the rate equations of lasers.)
说明: matlab常用算法程序集主要用于解决插值、函数逼近、矩阵特征值计算、数值微分、数值积分、方程求根、非线性方程组求解、解线性方程组的直接法、解线性方程组的迭代法、随机数生成、特殊函数计算、常微分方程的初值等问题(Mainly solve interpolation, function approximation, matrix eigenvalue calculation, numerical differentiation, numerical integration, equation roots, nonlinear equations solving, direct methods for solving linear equations, iterative methods for solving linear equations, random number generation, special functions Calculation, initial value of ordinary differential equations, etc.)
abaqus中扩展有限元(UEL)计算疲劳断裂(extended finite element method (uel)for fracture problems within the finite element software ABAQUS)
说明: 有两个ARMA过程,其中信号1是宽带信号,信号2是窄带信号,分别用AR谱估计算法、ARMA谱估计算法和周期图法估计其功率谱。(There are two ARMA processes, in which signal 1 is a wideband signal and signal 2 is a narrowband signal. The power spectrum is estimated by AR spectrum estimation algorithm, ARMA spectrum estimation algorithm and periodogram method respectively.)
替代数据方法(基于相位随机化方法),检验续写的非线性(Surrogate data method (based on random-phase method), non-linear write test)
说明: 用于求解数值算法最优化算法中的SQP算法(Solve SQP algorithm Numerical algorithm optimization algorithm)
传输矩阵法模拟光子晶体的模拟程序,好用,特别对于研究人员!(transfer matrix method photonic crystal simulation and the simulation and ease of use, especially for researchers!)
求解一维Eluer方程,计算一维激波管问题,lax_wendroff(Solving one dimensional Eluer equation to calculate the one-dimensional shock tube problem, lax_wendroff)
数值模拟方腔内Rayleigh-Benard对流。采用交错网格投影法,能量方程采用松耦合方法。(Numerical Simulation of square cavity Rayleigh-Benard convection. Using staggered grid projection method, the energy equation using loosely coupled approach.)
数值模拟方腔内Rayleigh-Benard对流。采用交错网格投影法,能量方程采用松耦合方法。(Numerical Simulation of square cavity Rayleigh-Benard convection. Using staggered grid projection method, the energy equation using loosely coupled approach.)
有限差分法,5阶WENO格式求解一维Euler方程组的双冲击波问题(fifth-order WENO scheme for 1-D Euler equation with two blast waves problem)
使用lasso方法,对特征矩阵进行优化特征选择(向量选择),使其达到最优。(Use lasso method, optimize the characteristic matrix feature selection (vector selection), to the optimal.)
带LASSO修正的LARS算法 稀疏表示(LARS with LASSO modification Sparse Representation)
变系数/非线性微分方程的求解,包括原式及改变的式子。 (Variable coefficients/non-linear differential equations to solve, including the original style and formula changes.)
说明: 1. 常用的数值积分方法(特别是梯形法、Simpson方法、 Cotes公式、Romberg算法以及Gauss 求积公式)的原理; 2. 复合梯形公式,复合Simpson公式,Romberg算法的程序(1. Commonly used numerical integration methods (especially trapezoid method, Simpson method Cotes formula, Romberg algorithm and Gauss quadrature formula); 2. Program of compound trapezoid formula, compound Simpson formula and Romberg algorithm)
此程序是用多重散射理论计算二维声子晶体的结构的Fortran代码。(This program is multi-dimensional phonon scattering calculated crystal structure Fortran code.)
对于交错网格上的WCNS格式进行精度测试(不带时间方向推进,仅测试空间精度)(test the order of accuracy of the WCNS scheme)