Why is Zero teh result of division?

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Erkan
Erkan il 8 Feb 2021
Commentato: Alan Stevens il 9 Feb 2021
Hi every body, in my program, inside the for loop, results of many division operations (twe, teg and twg) on the command window are showing the zero, but this variable values are not showing the zero in the workspace (right values are showing in workspace).
Nw(1)=0; Ne(1)=0; Ng(1)=0;
Nw(2)=-2.3930e+47; Ne(2)=2.1796e+47; Ng(2)=2.1796e+46;
B2=314.1593;
B4= 314.1593;
Ges=15.6252;
Ggs=15.6252;
Nl=5;
Nd=10e11;
Aw=1.35e+10;
Cw=5e-9;
Ae=1.5e+10;
Ce=9e-8;
ue=4;
uw=10;
ug=2;
Pwleff =2.7037e+34;
Kb*T =0.0259
Length=2.45e-1;
Width=12e-4;
Ees=0.84;
Egs=0.792;
Ewl=1.05;
loop2=2;
for d=1:loop2
Pes(d)=(Ne(d)/(ue*Nd*Width*Length*Nl*Ges))
Pgs(d)=(Ng(d)/(ug*Nd*Width*Length*Nl*Ggs))
twe(d)=1/((Aw+(Cw*Nw(d)))*(1-Pes(d))*Ges)
teg(d)=1/((Ae+(Ce*Nw(d)))*(1-Pgs(d)))
twg(d)=1/((Aw+(Cw*Nw(d)))*(1-Pgs(d))*Ggs)
tge(d)=(teg(d)*(ug/ue)*(exp((Ees-Egs)/(Kb*T))))
tew(d)=(twe(d)*((ue*Nd*Nl)/Pwleff)*(exp((Ewl-Ees)/(Kb*T))))
tgw(d)=(twg(d)*((ug*Nd*Nl)/Pwleff)*(exp((Ewl-Egs)/(Kb*T))))
end

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Alan Stevens
Alan Stevens il 9 Feb 2021
Modificato: Alan Stevens il 9 Feb 2021
Type
format shorte
in the command window before running the code.
  2 Commenti
Erkan
Erkan il 9 Feb 2021
Thank you so much for answer, but the twe, teg and twg values in 3rd iteration of the loop become NaN. I don't understand what is the problem.
Alan Stevens
Alan Stevens il 9 Feb 2021
3rd iteration? You just be running a different version of the code from that listed originally.

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Più risposte (1)

Erkan
Erkan il 9 Feb 2021
again hi, actually, the number of iteration must be 3000, but to find the problem i try the small iteration numbers
  1 Commento
Alan Stevens
Alan Stevens il 9 Feb 2021
You don't say what values you are using for Nw(3), Ne(3) and Ng(3).

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