ere are a few things you can try to resolve the issue:

Check your COMSOL license to make sure it includes the 6DOF module. The 6DOF module is required to perform dynamic mesh simulations in COMSOL.

Make sure that you have installed the necessary COMSOL modules and that they are up to date. This can be done by checking the "Module" section in the COMSOL interface.

Check the boundary conditions and mesh settings for your simulation. Make sure that the turbine is correctly defined as a moving part and that the mesh is properly generated with sufficient resolution.

Check that the solver settings are appropriate for your simulation. For example, if you are simulating a transient process, make sure that the time step is small enough to accurately capture the dynamics of the system.

Try running the simulation on a different computer to see if the issue persists. If the problem goes away on a different machine, it may be related to a hardware or software configuration issue on your original computer.

Thank you sir for your reply, very appreciated it. But i'm using Ansys fluent software, is it the same or not? should i follow the similar steps that you mentioned for COMSOL, or ansys is bit different?

To extract the angular velocity value using the dynamic mesh tool in Ansys Fluent, you can use the "Report" functionality. Here are the steps:

Make sure you have already defined and initialized your dynamic mesh model in the "Dynamic Mesh" panel.

Go to the "Reports" menu and select "Forces/Moments...".

In the "Reports: Forces/Moments" window, select the "Custom" tab.

Under the "Custom" tab, click the "Create..." button to create a new report.

In the "Create Report" window, give your report a name and select "Angular Velocity" under the "Report Type" drop-down menu.

Under the "Reference Values" section, select the appropriate reference frame for your simulation.

Under the "Report Variables" section, select "Angular Velocity" to include it in your report.

Click "OK" to save the report and close the "Create Report" window.

Back in the "Reports: Forces/Moments" window, select the report you just created and click the "Generate" button to generate the report.

The report will appear in a new window, and you can find the angular velocity value under the "Angular Velocity" column.

The problme Sir is not about how to plot the angular velocity but when i want to rotate my target body i used the 6DOF dynamic mesh tool, but the problem is the body does not rotate? and when i checked create, following the Ansys guide this "error chip-exec function not found" appeared in the console tab. The whole problem is the body does not rotate? i tired many of recommendations but without any solution.