** ERROR 304501 ** A valve gate variable speed controller is assigned to tetrahedral element (XXX). Variable speed control is not supported for tetrahedral elements in the current release.
Valve gate variable speed control on tetrahedral elements is not supported currently. (Note: Valve gate control with "Instant" open or close does work on tetrahedral elements.)
Model the valve gate element and its upstream channels in hot beams and rerun the analysis. An alternative (without altering the mesh model) is to change the valve gate control to be "Instant" open/close and then rerun the analysis.