Effacer les filtres
Effacer les filtres

Modifying A Variable in an ODEFUN/Boundary Value Problem

2 vues (au cours des 30 derniers jours)
Tony Stianchie
Tony Stianchie le 8 Mai 2023
I am trying to modify with each step across my odefun the values of k, mu, and c.
I'd like for these variables for change with each step based on the value calculated for Sxint(4,j)
clc
clear all
close all
function yprime = odefun(eta,y)
yprime = zeros(5,1);
global m etainf Pr mu k c
%% Plotting Velocity and Temperature
etainf = 20; % Find Convergence for both Temp and Velocity
Pr = 0.7; % Enter Pr
for m = [0]
solinit = bvpinit(linspace(0,etainf,100),[0 0 0 1 0]);
sol = bvp4c(@odefun, @odefun_bc,solinit);
xint = linspace(0,etainf,100);
Sxint = deval(sol,xint);
for j = 1:etainf
mu = (Sxint(4,j))^0.7;
c = (Sxint(4,j))^0.19;
k = (Sxint(4,j))^0.85;
figure(1)
hold on
title('Velocity vs Eta, Pr = 0.1')
xlabel('Eta')
ylabel('Velocity')
plot(xint,Sxint(2,:)); % plots f' (velocity)
figure(2)
hold on
title('Temperature vs Eta, Pr = 0.1')
xlabel('Eta')
ylabel('Temperature')
plot(xint,Sxint(4,:)); % plots q (temp profile)
end
end
  2 commentaires
Torsten
Torsten le 8 Mai 2023
Modifié(e) : Torsten le 8 Mai 2023
I'm totally lost on what you are trying to do with this code - especially what the "yprime" are you have to supply in function "odefun".
Tony Stianchie
Tony Stianchie le 8 Mai 2023
Sorry - I was vague in my question. I solved my problem, but appreciate the quick response.

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