[posadas84]

hello, I'm quite new in CFD....sorry for my ignorance

I'm trying to solve the momentum and continuity equations together.
Is that possible?


I'm trying to model on MATLAB the ventilation of a tunnel, therefore I would like to introduce the pressure outside and obtain a velocity field.

To start I'm going to model it 1-D therefore I'll use a finite difference scheme.

what will be my equations in the finite difference scheme?
I've tried a upwind scheme and.....E+12
the convergence is not very nice.

I've taken into account CFL.

Shall I use a space centered, implicit/explicit,C-N?????
HELP