Hey,
Are you talking about transient analysis? That’s the only case where Cd is given with respect to time.
For steady-state, “time” doesn’t mean time in seconds. It means iterations (simulation is an iterative process).
The only “real” Cd would be the coefficient in a fully converged result set.
For example, in this steady-state analysis, the Cd values in the ellipse have no meaning. The value that really matters is the last one:
