Solving PDE & ODE Combination

[gourish]

Hello,

I am trying to solve a system of equations that has 1 PDE and 1 ODE. I have all the initial conditions specified. Some how the the intial condition for y(t) is not being recognized.

Is there something missing?

Thanks for your help

Gourish

[ValeryOchkov]

1) It will be good to see the description of the model.

2) I think you can use not 1 function Sc(x, t) and 1 function y(t) but 2 functions Sc(x, t) and y(a, t). Here a is a formal argument.

Try please.

[gourish]

1) The equation are in the attached document.

2) I tried y(a,t) - but it still gives me the same error.

Thanks for the help

Gourish

[gourish]

Sorry, attached is the word document with equations.

Gourish

[ValeryOchkov]

Show please not a doc version of the Nathcad-sheet but a description of problem of the origin of the problem.

[gourish]

I have described the original problem along with equations. Thanks for the help.

Gourish