[sheikh nasir]

hi,
i am using fluent 6.3.26. i am using sliding mesh technique, but not able to get in it . i had done following steps . plz help me
1. i made two mesh model independently in gambit. one contain the lower portion of tunnel with train and second portion contain top portion of tunnel and fluid above train
2. i export them into fluent, and use fuse command to combine these two.
3. i apply grid check and it was done.
now i had to apply cell zone conditions , but i am not able to work on it.
plz can any body tell me , am i doing perfectly and how to proceed further. .