Calculate expression

Hello,

I have imported unsteady results in .vtu format into ParaView. I want to calculate the below expression:

paraview_community

It is the relative rate of change of the velocity vector. To apply this, I need to access velocity data at subsequent time steps, but I am not sure how to do this. Request guidance over this. Thank you.

The Force Time filter will let you “freeze” a dataset at a certain timestep.