yes enable the dynamic mesh, else you cannot access to dynamic mesh zone.
But don't change anything, since your mesh will not be updated (no layering, no smoothing and no remeshing)

thanks boss, really appreciate it. btw come visit my country indonesia:)

hi max i have problem again..
i have two interface in my geometry in fluent i tried to connect them using coupled but the contour of velocity was so weird check this out
http://www.cfd-online.com/Forums/%3C...pvl79/aneh.jpghttp://s10.postimage.org/ckww3r5zt/aneh.jpg

that is contour for initial solution..the wall is not rotating..but whay the fluid didnt pass the valve??

yes you have problem at interfaces
Check if they are well defined.
I am in vacation untill January the 4th.

but why??i think it had been defined well.. i have two surface not connected, i give that surface interface rotor and stator after that i use FLUENT to defined the interface type as coupled...

no you need to define the edges as interface.
Between rotor and stator, only edges are common

sorry i was wrong..i mean the edge of both stator and rotor

no you mean one interface for the stator edges, and another interface for the rotor edges.
In Fluent select both interfaces to define the grid interfaces

i've done that, and for the interface type i use coupled type

hi max..me again hope you not bored with me :)
i'm facing a problem..yes again...
in my dynamic analysis using moving mesh, i'm facing the negative cell problem.. can you analysis what was wrong in my simulation, why did this comes up, here is what error like to be

http://s13.postimage.org/xe3sun41j/negative_cell.jpg

something is wrong since you are not suppose to change your mesh.
Check where are the negative cells

Hi my friend, I am currently working on a similar project. I have to design a check valve. Is that working for you? Shall I follow the steps of your discussion??

I am also plannin on using Sliding mesh to rotate a square Cylinder 2D....can ny1 help in defining interfaces.....I am not able to understand how we have two interfaces from d same circle...Do I have 2 make two circles nd define dem as interfaces

imagine a surface with a hole (disk) > you are agree that in this surface you have a circle.
imagine now a disk not located on the surface mentionned earlier, but anywhere > you are agree that a circle (edge) is attached to this disk
You have then 2 circles.
Now move your disk in such way, that it will cover the hollow from first surface.
Finally you have defined a stator (first surface), and the rotor (disk) which are disconnected. And you also have 2 superposed interfaces (one belongs to stator surface and the other belongs to the rotort (disk)) Here the interfaces are the circles (edges)
I Hope I was clear
;)

thanks max....How do I couple the two interfaces
1.coupled
2.periodic
or
3.periodic wall boundary.
I found these 3 options in fluent

don't remember anymore, but coupled should be ok