michujo 
June 15, 2012 08:20 
Coefficients discretized momentum equation
Dear CFDonliners,
I came across a question when trying to solve the momentum equation following Patankar's book (1980) indications.
When solving a general transport equation for a certain variable , the discretized form takes the form:
, where P,E,W,N,S stand for point, east face, west face, north face and south face, respectively. The coefficients depend on the type of numerical scheme used (central differences, upwind, exponential, power law...).
My question: how do we calculate the discretization coefficients for the momentum equations u and v? can we just assume that the momentum equations are another set of convectiondiffusion equations, where the variable are u and v? Then we could just use the same method as before (upwind, power law, ...).
Any help will be welcome.
Thanks in advance :).
