Reply To: How to set a motion in a specified reference frame

[Lee]

 

 

Hi, Rob,

  I do need remeshing, the volume of fluid 2 increases with the linear movement of moving face, and in Fluent, I choose the layering as the method, the deforming wall is shown in the figure 5. Actually, I have obtained the velocity component in x, y, z directions, by using CG_MOTION, I successfully simulated the motion, but the time step size should be very small(and the smaller the better), this is because the velocity in x and y directions cause displacement error, as is shown in Figure 6, in order to avoid such error, I wish the moving face could just move along one axis(axis 2 in figure 1/2), this is why I ask this question.

       

Figure 5                                                 

                      

      Figure 6