sol2= bvp4c(@bvpexam2, @bcexam2, sol); (How can I plot second solution)

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Yasir 2024-7-1，11:02

关闭： Torsten 2024-7-1，18:54

using this code for different values of alpha i ploted the first solution. now what changes are required to plot second solution using this code.

''dual solutions''

function Ibrardual

clc

clear all

Nt=0.5; Nb=0.5; Le=2; Pr=1; alpha=-0.2138; s=1; A=1;

%% solution in structure form

%First solution

sol = bvpinit(linspace(0,2,10), [1 0 0 0 0 0 0]);

sol1 = bvp4c(@bvpexam2, @bcexam2, sol);

x1 = sol1.x;

y1=sol.y;

plot(x1,y1(3,:),'b');

hold on

result=(A)^-1/2*y1(3,1) % where Rex^1/2cf=A^-1/2*y1(3)

%% Here I define residual of boundary conditions

function res = bcexam2(y0, yinf)

res= [y0(1)-s; y0(2)-alpha; y0(4)-1; y0(6)-1;

yinf(2); yinf(4);yinf(6)];

end

%% First order ODEs are define here

function ysol = bvpexam2(x,y)

yy1 = -A*(y(1)*y(3)-(y(2))^2)-y(2);

yy2 = -Pr*(A*y(1)*y(5)+Nb*y(5)*y(7)+Nt*(y(5))^2);

yy3 = (-Le*A*(y(1)*y(7))-(Nt/Nb)*( -Pr*(A*y(1)*y(5)+Nb*y(5)*y(7)+Nt*(y(5))^2)));

ysol = [y(2); y(3); yy1;y(5);yy2;y(7);yy3];

end

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此问题已关闭。

R2016a

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