Using a loop in a loop Help pls..
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Help... please a question about using loop inside a loop.
I got a loop which is
N=100;
i=1;
for x=0:c/N:c
if x>=(P*c)
dzdx(:,i)=(M*c/(1-P)^2)*(2*P/c-2*x/c^2);
else
dzdx(:,i)=(M*c/P^2)*(2*P/c-2*x/c^2);
end
i=i+1;
end
x=[0:c/N:c];
%%Using vortex_lattice to get gamma and xj
[gamma, xj] = vortex_lattice(dzdx, x, alpha, vinf, rhoinf, c);)
which i want to find gamma and , xj
I am sure the above code is correct , can i know how should i type if i want this loop run when N=[20:20:640]
following up from the gamma and xj
gamma_total=sum(gamma);
gamma_big=vinf*gamma_total;
% Finding Lift
L=rhoinf*vinf*gamma_big;
% Finding Coefficient of lift
C_lN(n)=L/(0.5*rhoinf*c*vinf^2);
How am I suppose to get 6 different C_lN when N[20,40,80,160,320,640]??
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Réponses (1)
John BG
le 8 Déc 2015
Modifié(e) : John BG
le 13 Fév 2016
c=3e8;M=5;P=10 % since you did not define them I gave P and M these values
N=[20:20:640]
gamma_array=[]
xj_array=[]
big_dzdx=zeros(101,32) % 32 out of the 640/20 you want N to sweep through
for j=1:1:numel(N)
i=1;
for x=0:c/N:c
if x>=(P*c)
dzdx(:,i)=(M*c/(1-P)^2)*(2*P/c-2*x/c^2);
else
dzdx(:,i)=(M*c/P^2)*(2*P/c-2*x/c^2);
end
i=i+1;
end
x=[0:c/N:c];
big_dzdx(:,j)=dzdx
%%Using vortex_lattice to get gamma and xj
[gamma, xj] = vortex_lattice(dzdx, x, alpha, vinf, rhoinf, c);)
gamma_array(:,j)=[gamma_array; gamma]
xj_array=[xj_array; xj]
end
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