Description: 一维边值问题线性有限元数值解法的matlab程序。有详尽的算法分析，程序注释清楚。适用于有限元方法的初学者，能帮助读者加深对基本概念的理解。-one-dimensional linear boundary value problems finite element numerical solution of Matlab procedures. A detailed analysis of algorithms, clear procedures for the Notes. Application of the finite element method in the beginners will help readers to better understand the basic concepts. Platform: |
Size: 107520 |
Author:姚飞 |
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Description: 偏微分方程数值解上机实习
运用古典显式差分格式求解二维扩散方程的初边值问题
运用P-R差分格式求解二维扩散方程的初边值问题
运用局部一维格式求解二维扩散方程的初边值问题
给出了源程序，运行结果，以及算法比较-Numerical solution of partial differential equations on the use of classical machine internship explicit difference scheme for solving two-dimensional diffusion equation of the initial boundary value problem of the use of PR difference scheme for solving two-dimensional diffusion equation of the initial boundary value problem of the use of partial solution of one-dimensional style of the early two-dimensional diffusion equation boundary value problem gives the source code, run the results of the comparison algorithm Platform: |
Size: 91136 |
Author:甘雯 |
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Description: 打靶法求微分方程边值问题，这是数学上的求取方程问题的边值的方法
-Shooting method for boundary value problems for differential equations, which is to strike a mathematical equation of the boundary value problem approach Platform: |
Size: 1024 |
Author:join |
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Description: 矩量法是求解电磁场边界值问题中一种行之有效的数值方法.它所做的工作是将积分方程化为差分方程,或将积分方程中积分化为有限求和,从而建立代数方程组,故它的主要工作量是用计算机求解代数方程组.所以,在矩量法求解代数方程组过程中,矩阵规模的大小涉及到占用内存的多少,在很大程度上影响了计算的速度.如何尽可能的减少矩阵存储量,成为加速矩量法计算的关键.此处介绍了方法-MoM is the solution of electromagnetic field boundary value problem in an effective numerical method. It is the work done by integral equations into differential equations, or integral equations into a finite sum of points, so as to establish algebraic equations Therefore, it is the main workload of the computer to solve algebraic equations. Therefore, in the moment method for solving algebraic equations, the matrix size relates to the amount of memory, to a large extent affected the speed of calculation. how to maximize the reduction of matrix storage has become accelerated MoM calculation of the key. introduce the method here Platform: |
Size: 2250752 |
Author:周严 |
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Description: 该程序主要针对三角形问题，通过输入三角形三条边的取值范围，自动生成边的测试值，并对测试值是否能构成三角形、是否等边三角形、是否等腰三角形、是否直角三角形进行了判定与显示。其中在测试值的生成方式上，采用了两种自动生成方式：一是健壮性测试（所谓的七点法），二是边界值分析（也即五点法）。-The program mainly for the triangle problem, by entering the three sides of the triangle range, automatically generated test edge value, and test whether the value of the triangle pose, whether the equilateral triangle, is it isosceles triangle, right triangle conducted to determine whether and显示. Which the test value is generated, using two types of automatic generation methods: First, robustness testing (the so-called seven-point method), and the other is boundary value analysis (that is, five-point method). Platform: |
Size: 49152 |
Author:Cuilq |
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Description: a program which applies the p-method version of the finite element method to a linear two point boundary value problem in 1D Platform: |
Size: 2048 |
Author:李泽 |
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Description: 这是一个求素数的程序，并且同时存在编译错误和运行错误。编译错误是指程序编译过程中出现的一些语法错误，VC++的功能强大，能较为准确的定位，纠错较为方便，而运行错误是在运行过程中，比如该题中在边界值附近运行时的溢出错。-This is a prime number for the procedure, and exist simultaneously compile error and run error. Compiler compiler refers to the procedural error occurred in the course of a number of grammar errors, VC++ powerful, can be more accurate positioning, error correction is more convenient, and the error is running at running process, such as the boundary value problem in the vicinity of running mistake at the time of spill. Platform: |
Size: 283648 |
Author:黄昕 |
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Description: Matlab经过多年的发展与完善，已成为科学与工程计算的重要工具，而有限元方法作为近似
求解边值问题的一种数值技术，也广泛应用于数学和工程问题．对Matlab和有限元的原理和步骤
进行了阐述，并用实例证明了两者的结合使所要研究的偏微分方程的数值解更为有效、精确．-Matlab after years of development and improvement of science and engineering has become an important tool for the calculation, while the finite element method for solving boundary value problem as an approximate numerical technique, it is widely used in mathematics and engineering problems. Matlab and the finite element of the principles and steps described and demonstrated with examples of the combination of the two has to work on the numerical solution of partial differential equations is more effective and accurate. Platform: |
Size: 121856 |
Author:云 |
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Description: a program which applies the finite difference method to a two point boundary value problem in one spatial dimension. Platform: |
Size: 1024 |
Author:jahan |
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Description: 讨论若干常见数值计算问题：线性分析、一元和多元函数分析、微积分、数据分析、以及常微分方程（初值和边值问题）求解等。-Discuss a number of common numerical problems: linear analysis, a dollar and multi-function analysis, calculus, data analysis, and ordinary differential equations (initial and boundary value problem) to solve other. Platform: |
Size: 314368 |
Author:xiaogq |
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Description: MATLAB常系数线性微分方程的解析解方法、微分方程问题的数值解法、特殊微分方程的数值解、边值问题的计算机求解、偏微分方程求解入门、微分方程的框图求解-MATLAB linear differential equations with constant coefficients analytic solution methods, numerical solution of differential equations the problem, special numerical solution of differential equations, boundary value problem by computer, partial differential equations to solve to introduce the block diagram of differential equations to solve Platform: |
Size: 3016704 |
Author:qiqi |
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Description: 计算数学常用的一种变成软件，本程序解决的是微分方程边值问题-Computational mathematics to become a commonly used software, this program is to solve differential equations boundary value problem Platform: |
Size: 121856 |
Author:wq889608 |
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Description: 解高阶非线性ODE边界值问题，利用shooting method猜值，ode function 解答，在利用叠代求值。-Solution of higher-order nonlinear ODE boundary value problem using shooting method guessed value, ode function answer, in the use of iterative evaluation. Platform: |
Size: 1024 |
Author:黄同生 |
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Description: FEMOD1 is an interactive program for the setup, solution, and printout of a two point boundary value problem in a one dimensional region. The finite element method is used.
The differential equation has the form:
-d/dX ( K(X) dU/dX ) + C(X) * dU/dX + B(X) * U = F(X) + P(X)
Here, P(X) stands for a point load function.
The boundary conditions at the end points may have one of the following forms:
U(X0) = value1
K(X0) * dU/dX(X0) = value1 * U(X0) + value2.
-FEMOD1 is an interactive program for the setup, solution, and printout of a two point boundary value problem in a one dimensional region. The finite element method is used.
The differential equation has the form:
-d/dX ( K(X) dU/dX )+ C(X)* dU/dX+ B(X)* U = F(X)+ P(X)
Here, P(X) stands for a point load function.
The boundary conditions at the end points may have one of the following forms:
U(X0) = value1
K(X0)* dU/dX(X0) = value1* U(X0)+ value2.
Platform: |
Size: 40960 |
Author:zhang xiaoping |
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Description: FEMOD2 is an interactive program for the setup, solution, and printout of a boundary value problem in a two dimensional region. The finite element method is used. -FEMOD2 is an interactive program for the setup, solution, and printout of a boundary value problem in a two dimensional region. The finite element method is used.
Platform: |
Size: 41984 |
Author:zhang xiaoping |
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Description: 在最优控制、变分法、微分方程等学科中常遇到两点边值问题( TPBVP ),徒手求取解析
解比较繁；MATLAB 的符号数学工具箱却又仅限于解一点边值问题。本示例阐述如何用符
号数学工具箱解 TPBVP。-In optimal control,variational calculus and differential equation frequently encountered two-point boundary value problems(TPBVP).Free-hand to get a analytical solution is difficult a bit,but symbolic math toolbox only solved one-point boundary value problem. How to use this toolbox to get the analytical solution of TPBVP are illustrated by examples. Platform: |
Size: 20480 |
Author:吴受章 |
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Description: In MATLAB, usually we use function bvp4c() to solve boundary value problem (BVP) of ODE. However, we also can use function ode45() to solve BVP of ODE too. However, ode45() needs all initial values at one point. Therefore we have to construct an auxiliary function, whose input argument is the missing initial value and the return output is the given boundary value, Then we can call function fsolve() to get the missing initial value. This method is particularly efficient it the ODE has one or more parameters. Also this method is essentilal for GNU Octave, because whose function bvp4c() is not programmed for parameter ODE yet.-In MATLAB, usually we use function bvp4c() to solve boundary value problem (BVP) of ODE. However, we also can use function ode45() to solve BVP of ODE too. However, ode45() needs all initial values at one point. Therefore we have to construct an auxiliary function, whose input argument is the missing initial value and the return output is the given boundary value, Then we can call function fsolve() to get the missing initial value. This method is particularly efficient it the ODE has one or more parameters. Also this method is essentilal for GNU Octave, because whose function bvp4c() is not programmed for parameter ODE yet. Platform: |
Size: 82944 |
Author:delin |
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