converting M.file into simulink

Hi;

I already make a program using M.file that simulate the unsteady heat conduction in 1-D by using finite difference method. i've tried the Matlab function block, but failed. Could anyone suggest how to adjust the M.file code

N2=10;

T=zeros(1,N2);

Tn=zeros(1,N2);

for i=1:N2 T(1,i)=100; end

Dx=0.1;

Dt=0.001;

M=2*Dx;

k1=1;

k2=1;

p1=1;

p2=1;

for iter=1:100

    for i=1:1
        Tn(1,i)=(1-((2*k1*Dt)/(p1*Dx^2)))*(T(1,i)) + ((k1*Dt)/(p1*Dx^2))*(2*T(1,i+1));
    end
    for i=2:N2-1
        Tn(1,i)=(1-((2*k1*Dt)/(p1*Dx^2)))*(T(1,i)) + ((k1*Dt)/(p1*Dx^2))*(T(1,i+1)+T(1,i-1));
    end
    for i=N2:N2
        Tn(1,i)=(1-((2*k2*Dt)/(p2*Dx^2)))*(T(1,i)) + ((k2*Dt)/(p2*Dx^2))*(T(1,i-1)-((2*Dx/k2)*(T(1,i)-25))+T(1,i-1));
    end
    for i=1:N2
        T(1,i)=Tn(1,i);
    end
end

Answer 1

[Azzi Abdelmalek]

You can't use a script with matlab function block. You need to define your input a d output argument to make your code a function.

[Mohd Ibthisham]

so that means i need to generate a new code that feasible to be use in simulink?i thought there is a way, which slightly adjust the m.file to suit the matlab funtion block

[Azzi Abdelmalek]

To suit the matlab function block, your file should be a function file. You can transform your script file to a function file. The input arguments will be the inputs of your Matlab function block, and the output arguments will be its outputs

You need to know how functions work, look at this link

http://www.mathworks.com/help/matlab/ref/function.html

[Mohd Ibthisham]

I have already transformed the M.file to a function file, but i couldnt manage to do it properly. There is an error 'Unable to locate a C-compiler required by Stateflow and MATLAB Function blocks.Use 'mex -setup' to select a supported C-compiler'. Anyway thanks for kind assistance i will look through the matlab-function documents.

[Azzi Abdelmalek]

In Matlab windows command type

mex -setup