define your rotor domain as rigid body, then ou can give the angular velocity as a profile in the "motion UDF/profile"
https://www.sharcnet.ca/Software/Flu...am-solid-kinem

max can you show me the way from the beginning?? i mean how to setup a udf/profile cause i have tried to but there is nothing happened..

can you send me your geom file in step or iges format, to my mail id. so that i can check and try to help you. mail id is anbu1088@gmail.com

if you know the angular velocity of your rotor, then moving reference from will be a good opt for you, instead of dynamic mesh.

>> transient profile in a tabular format

1. Standard Transient Profiles
-----------------------------------------------

The format of the standard transient profile file (based on the profiles described in Section 6.24 of the FLUENT 5 User's Guide) is

((profile-name transient n periodic?)
(field_name-1 a1 a2 a3 .... an)
(field_name-2 b1 b2 b3 .... bn)
.
.
.
.
(field_name-r r1 r2 r3 .... rn))

One of the field_names should be used for the time field, and the time field section must be in ascending order. The periodic? entry indicates whether or not the
profile is time-periodic. Set it to 1 for a time-periodic profile, or 0 if the profile is not time-periodic.

An example is shown below:

((sampleprofile transient 3 1)
(time
1
2
3
)
(u
10
20
30
)
)

You can read this file into FLUENT using the Boundary Profiles panel or the File/Read/Profile... menu item.

Define >> Profiles...

File >> Read >> Profile...

check omega_x at https://www.sharcnet.ca/Software/Flu...ug/node446.htm