# How can I plot this code?

2 views (last 30 days)
Hdez on 21 Jan 2021
Answered: Gaurav Garg on 25 Jan 2021
clc
close all
clear all
%Lenght of the plate ----------------------------------------------
lx= input ('Enter the desire value for x length:');
ly= input ('Enter the desire value for y length:');
%alpha ------------------------------------------------------------
k=143; %Thermal coductivity (W/m.C)
p=2.8*10^3; %Density (kg/m^3)
c=795; %Specific heat (J/kg.C)
alpha= k/(p*c); %Thermal diffusivity (m^2/s)
%Grid Spacing
h= input('Enter the desire grid spacing:');
while rem (lx,h)~=0 || rem (ly,h)~=0
fprintf ('Incorrect solution \n Please enter a value which results in an integer number:')
h= input ('Reenter the desire grid spacing:');
end
%Grid Spacing along lx and ly -------------------------------------
nc= (lx/h)+1; %Number of columns
nr= (ly/h)+1; %Number of raws
%Time step --------------------------------------------------------
dt= input ('Enter the desire time step:');
while dt>= h^2/(4*alpha)
dt= input ('Enter the desire time step:');
end
%Fourier Number (fo) ----------------------------------------------
fo= alpha*dt/(h^2);
%Creation of vectors ----------------------------------------------
T1= zeros (nr, nc);
%Boundary conditions ----------------------------------------------
T1(end,:)=0;
T1(1,:)=50;
for i= 1:nr
T1(i,1)= 50-50/(nr-1)*(i-1)
T1(i,end)= 50-50/(nr-1)*(i-1)
end
%For loops for temperatura: (Ts + Tn + Tw + Te - (4-1/fo)* Tp)) * fo
T2=T1;
for t=0:dt:inf
T1=T2
for j=2:nc-1
for i=2:nr-1
T2(i,j)= (T1(i-1,j)+ T1(i+1,j)+T1(i,j+1)+T1(i,j-1)-(4-1/fo)*T1(i,j))*fo;
end
end
%check convergence
if max(max(T2-T1))<0.001
break
end
end
disp(dt*t)
Rik on 22 Jan 2021
You can start out with imshow and then look into colormap and colorbar.

Gaurav Garg on 25 Jan 2021
Hi Hdez,
You can simply plot using plot command -
plot(T2)
To know more about plot command, you can refer here, or if you want to know which types of plots can be plotted in MATLAB, you can refer here.

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