FLUENT-preview mesh motion problem
 

Hi everyone

I am simulating a 2D airfoil pitching and plunging motion simulation.
I run the simulation in fluent by compiling the UDF .c file and set the airfoil as the rigid body and it adjacent zone as deforming.
I tick smoothing and remeshing box under the "mesh method"

My problem is when I try to preview the mesh motion in the window1 "grid", I cant see any grid and mesh display on the screen. I also unable to see any image for the saved picture at each time step.
Based on my understanding Fluent be able to capture and save images of the mesh motion at each time step if we tick the "save picture" box.

It was a blank picture has been saved into my working folder.

can anybody help me.
sorry for my bad english.

at the first step you should display your geomety
general > Display
select all and display you geometry after that you can see dynamic mesh