Calculating values of a dependent variable at a using a range of independent variables
11 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
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
0 commentaires
Réponse acceptée
Chad Greene
le 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)
4 commentaires
Chad Greene
le 10 Mar 2021
Ahh, try this. It looks like a few dot operators were missing. My go-to solution when things are acting funny with multiplication, division, or exponents, is to put a dot in front of each one. That seems to have fixed it.
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));
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Startup and Shutdown dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!