Solving heat transfer equation using finite difference method

1 次查看（过去 30 天）
Michael Omodara
Michael Omodara 2018-4-22
回答： Benjamin Großmann 2018-4-23
Please, I am trying to solve for the temperature distribution in a box but I am having issues with my code error: "Index exceeds matrix dimension". This is my code
M=15.5;
L= 1.22;
dx= 0.122;
T(1)=35;
Tc = 25;
N= L/dx;
St= 50400;
dt= 1800;
rho= 720;
t= St/dt;
T(:,1)=T(1);
K= 0.0676+(0.00054*M);
c= 0.334 +(0.00977*M);
q= 2*10^7;
h= (q*(dx)^2)/K;
for j=1:t
for i=1:N
T(i,j+1)=F(K,dt,dx,rho)*(T(i+1,j)+T(i-1,j)+h)+(1- (2*F(K,dt,dx,rho)))*T(i,j);

请先登录，再回答此问题。

回答（1 个）

Benjamin Großmann
Benjamin Großmann 2018-4-23
You start with i=1 and one of your indices is T(i-1), so this is addressing the 0-element of T. In Matlab we start with index 1. This could be one problem but it is not possible to debug your code as it is since there are "end"s missing and the function or Matrix "F" is not given.

类别

在 Help Center 和 File Exchange 中查找有关 Fluid Dynamics 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by