The unmatched grids in CFX4.2

Darcy

Hi everybody

I have some problems in the unmatched grids used in CFX4.2.

1. How does CFX4.2 codes calculate the orientation

change to interpret the gradient vector in the new

block? Can somebody give me the formula used in

this calculation?

2. How does CFX4.2 correct the estimates of convection

coefficients calculated from both side of the

umatched grid interface to enforce mass

conservation ? I have check the mass conservation

on the unmatched grids in my computation. I found

that the mass conservation is not archieved. Why?

Isn't it really enforced in all conditions?

Darcy