Error in Ode15s

 function x=Tprevh2o(t) 
  x=y1(t,1);
    end

        function dy=derivate2(t,y2,Tprevh2o)  

            dy=[U(y2(2))*Atot*(Tofh(y2(2))-y2(1))/m_w/Cp_w+mpunto_w/m_w*( Tprevh2o(t)- y2(1)); U(y2(2))*Atot*(y2(1)-Tofh(y2(2)))/mpcm];
     end
    tspan = [0:1:1000];
    y0 = [293.15 Hpcm0];
    [t,y2]=ode15s(@derivate2,tspan,y0);

Y1 is a known column vector, for which at each time correspond a value. I want the Ode to read that function as function of time in derivate2, how could i do? Thanks in advance

Answer 1

[Torsten]

Take a look at the examples

-PASS EXTRA PARAMETERS TO ODE FUNCTIONS (you didn't do that correcty in your code above)

and

-ODE WITH TIME-DEPENDENT TERMS

under

https://de.mathworks.com/help/matlab/ref/ode45.html

This should solve your problem.

Best wishes

Torsten.