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求一个一维瞬态热传导的有限元matlab代码,应用第一类边界条件的 一维热传导方程matlab

求一个一维瞬态热传导的有限元matlab代码,应用第一类边界条件的一维热传导方程matlab

求一个一维瞬态热传导的有限元matlab代码

是transient 1D heat conduction的离散化求解导热微分方程吗?如果是的话,先追加150币采纳答案再发给你。

求高手给出一维热传导方程解的图形的matlab代码

function main

%热传导方程的差分解法

lda=0.000015;%lad即为a^2

l=50;

h=0.05;%空间步长

alpha=0.5;

tao=alpha*h^2/lda; %时间步长

N=l/h;%空间步数

M=100;%时间步数,由于你条件没有限制,所以我随便取了个值

for i=1:N+1

u(1,i)=fai((i-1)*h);

end

for k=1:M

u(k,1)=g1(k*tao);

u(k,N+1)=g2(k*tao);

end

for k=1:M

for i=2:N

u(k+1,i)=alpha*u(k,i+1)+(1-2*alpha)*u(k,i)+alpha*u(k,i-1);

end

plot([0:h:l],u(k+1,:));

hold on; pause(0.05);

end

function u=fai(x)

u=100;

function u=g1(x)

u=0;

function u=g2(x)

u=0;

就这个拉,你试试看行不,不行的话在联系我吧!!

热传导问题与有限元matlab计算

%2D HeatEquation.

clear; close all; clc

%grid has n - 2 interior pointsper dimension (overlapping)

n=5;

m=6;

p=m*n

x =linspace(0,1,n); dx = x(2)-x(1);

y =linspace(0,1,m); dy = dx;

TOL = 1e-6;

T = zeros(p);

T(1,1:n) = 20; %TOP

T(m,1:n) =10; %BOTTOM

T(1:m,1) =35; %LEFT

T(1:m,n) =25; %RIGHT

dt = dx^2/4;

error = 1; k =0;

while error > TOL

k = k+1;

Told = T;

for i = 2:m-1

for j = 2:n-1

T(i,j) =dt*((Told(i+1,j)-2*Told(i,j)+Told(i-1,j))/dx^2 ...

+(Told(i,j+1)-2*Told(i,j)+Told(i,j-1))/dy^2) ...

+ Told(i,j);

end

end

error = max(max(abs(Told-T)));

end

Tmax=max(T);

Tmin=min(T);

Tx22=T(5,2);

%subplot(2,1,1),contour(x,y,T),

%title('Temperature(Steady State)'),xlabel('x'),ylabel('y'),colorbar

%subplot(2,1,2),pcolor(x,y,T),shadinginterp,

%title('Temperature(Steady State)'),xlabel('x'),ylabel('y'),colorbar

用matlab编程:pde工具箱在热传导,静电学等方面的应用

template<class Type>

Type Stack<Type>::popDataOutOfStack()

{

Type value=0;

if(isEmputy())

{

cout<<"栈中数据已经清空!"<<endl;

return value;

}

count--;

value=*(data+count);

return value;

}