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Calculating values of a dependent variable at a using a range of independent variables

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Tom Morris
Tom Morris on 10 Mar 2021
Commented: Tom Morris on 10 Mar 2021
Hi,
I'm new to matlab so this might be very simple but....
I have this equation;
Eff=((Cv.*Temp.*(1-Vr))+(((2.*l.*S.*S)./(n.*n))*((Vi./(pi.*Rb.*Rb))-l))+(M./(R.*Temp))+((Vr^(1-k)).*(R.*Temp./M)))/((Cv.*Temp)+((R.*Temp)./M)+(((S.*Vi)./(sqrt(2).*n.*pi.*Rb.*Rb))^2))
All of the variables are constants except Eff and Temp. I would like to calculate values of Eff using Temp between a range of 373 and 623 so that I can plot a graph to investigate the effect of Temp on Eff.
Any Advice would be greatly appreciated

Accepted Answer

Chad Greene
Chad Greene on 10 Mar 2021
Welcome to the world of Matlab, Tom.
Indeed, I think this is pretty straightforward. To make a range of values of Temp between 373 and 623, do
Temp = 373:623;
Alternatively, to do the same thing but in steps of 0.1, do
Temp = 373:0.1:623;
Then calculate Eff by
Eff=((Cv.*Temp.*(1-Vr))+(((2.*l.*S.*S)./(n.*n))*((Vi./(pi.*Rb.*Rb))-l))+(M./(R.*Temp))+((Vr^(1-k)).*(R.*Temp./M)))/((Cv.*Temp)+((R.*Temp)./M)+(((S.*Vi)./(sqrt(2).*n.*pi.*Rb.*Rb))^2));
and plot the results like this:
plot(Temp,Eff)
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