I have 3 equations to integrate
equation1
I want to integrate equation1 numerically and put the solution to equation2 (see I(b,X))
And than I should integrate equation2 numerically and put the solution to equation3
I have coded what I explain to you. (The Y in this code is the x )
But it is not running.
Can you tell me what I did wrong?
t0 = 0 ;
y0 = 0 ;
tEnd = 5;
h= 0.1;
N = (tEnd.-t0)./(h);
D=1.1;
r=0.0984;
ka=3;
z=10
umax=0.08
km=3
I0=1
a=3
b=3
%% initializing Solution for I
m = [0:0.5:3.14]
I = [N+1,1]
I(1)= I0
%% solving euler Ex
for i=1:N
A=(I0./3.14).*exp((-a).*(Y(i)).*(((b.*cos(m)).+((r.^2).-((b.^2).*(sin(m)).^2)).^0.5)))
I(i+1) = I(i).+(h.*A);
end
%% initializing Solution for u
R = [0:0.5:3.14]
U = [N+1,1]
U(1)= 0
%% solving euler Ex
for i=1:N
B=(2.*(umax./(r.^2))).*((b.*(A)))./(A.+km)
U(i+1) = U(i).+(h.*B);
end
%%Initializing Solution
T = [t0:h:tEnd]';
Y = [N+1,1]';
y(1) = y0;
%% Solving using Euler's Explicit Method
for i= 1:N
fi = 20.*2.717.^(B.-D).*T(i));
Y(i+1) = Y(i).+(h.*fi);
end
plot(T,Y);
disp(T)
Best regards
Tae hoon lee