# how to sum elements

1 view (last 30 days)
Egor Popov on 20 May 2022
Edited: Egor Popov on 21 May 2022
I have a code in which, in addition to displaying graphs, you need to get the sum of the elements and display them on a common graph. How can I correctly sum of loop elements (GA, GH, GUV, GGAS, GGRAINS)? ty
clear all
n=1;
z=1;
G=1.4;
Tgr = 15;
N_t = 100000;
T_ini = 10;
T_fin = 1e4;
dT=(1e4-1e1)/N_t;
ne=1e-4;
Rdiss = 5.6e-11;
nh2 = 2.6e-9;
k4 = 6.4e-10;
for k=1:N_t
T(k) = T_ini + dT*(k-1);
k60 = 3.0d-18*T(k)^0.5/(1+4.0d-2*(T(k)+Tgr)^0.5+2d-3*T(k)+8d-6*T(k)^2)/(1+1.0d4*exp(-600/Tgr));
ncrh = 10.^(3-0.416*log10(T(k)/10000)-0.327*(log10(T(k)/10000)^2));
ncrh2 = 10.^(4.845 - 1.3*log10(T(k)/10000)+1.62*(log10(T(k)/10000))^2);
nharmonic = 1.0/(10.0/ncrh + 1/ncrh2);
k2 = 4d-9/T(k)^0.17;
GGAS(k)= (2.93e-12*k2*nh2 + 5.65e-12*k4*nh2)*nh2*nharmonic;
GGRAINS(k) = 7.16d-12*k60*nh2*nharmonic;
fi=G*T(k)^0.5/(0.5*ne);
e=(4.9e-2*(1+4e-3*fi)^-1)+(3.7e-2*((T(k)/10000)^0.7)*(1+2e-4*fi)^-1);
GA(k)=1.3e-24*e*1.4*1*1;
GH(k) = 6.4e-13*Rdiss*nh2;
GUV(k) = 2.7e-11*Rdiss*nh2;
end
hold on
%figure(1001)
loglog (T,GA)
loglog (T,GH, '-.')
loglog (T,GUV, '--')
loglog (T,GGAS, ':.')
loglog(T,GGRAINS)
set(gca,'yscale','log')
set(gca,'xscale','log')
legend ('GA','GH','GUV','GGAS','GGRAINS')

Voss on 20 May 2022
GA_sum = sum(GA);
GH_sum = sum(GH);
% etc.

R2021b

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