How can i get a table values from the program

2 vues (au cours des 30 derniers jours)
Syed Mohiuddin
Syed Mohiuddin le 8 Avr 2023
I have a coupled non-linear differential equations
(d^2 f)/(dy^2 )+m2*g2*dB/dy-2*i*R2*g1*f - g3*G1*y - R4*g1 = 0
(d^2 B)/(dy^2 )+t4/(1-i*H1)*df/dy=0
Boundary conditions are
f=0 at y=0
f=C1 at y=1
And
dB/dy-(t4/(P1* (1-i*H1 ) ))* B=0 at y=0
dB/dy+(t4/(P2 (1-i*H1 ) ))* B=0 at y=1
In the program i have taken G1=2, but now at the end of the program, i have a condition
if dU1/dy=0, then G1=G2, so i need to prepare a table to get the value of G2 for different parameters, how to get it?, Please let me know the solution
Matlab programs is enclosed for your reference
close all
clc
p=1;
P1=2;
P2=2;
b1=0.00021;
b2=0.000058;
S1=0.005;
S2=580000;
G1=2;
m2=20;
R1=997.1;
R2=3;
C1=1;
R3=4420;
B=0.5;
H1=0.25;
K1=3;
R4=1;
t1=(1./((1-p).^2.5));
t2=(1-p)+(p.*(R3./R1));
t3=(1-p)+p.*((R3.*b2)./(R1.*b1));
S=(S2./S1);
t4=1-((3*(1-S).*p)./((2+S)+(1-S).*p));
g1=t2./t1;
g2=1/t1;
g3=t3./t1;
m1=(t4./(P1.*(1-1i.*H1)));
m2=(t4./(P2.*(1-1i.*H1)));
dydx=@(x,y)[y(3);
y(4);
-m2.*g2.*y(4)+2.*1i.*R2.*g1.*y(1)+g3.*G1.*x+R4.*g1;
(-t4./(1-1i.*H1)).*y(3)];
BC = @(ya,yb)[ya(1);yb(1)-C1;ya(4)-m1.*ya(2);yb(4)+m2.*yb(2)];
yinit = [0.01;0.01;0.01;0.01];
solinit = bvpinit(linspace(0,1,50),yinit);
U1 = bvp4c(dydx,BC,solinit);
hold on

Réponses (0)

Catégories

En savoir plus sur MATLAB dans Help Center et File Exchange

Produits


Version

R2016b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by