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
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