Hello everyone!
As you guys probably know, calculating the drag coefficient in SimScale gives you a graph of drag coefficient with respect to time so I was wondering if there was a way to calculate a discrete value for it.
Thanks!
Hello everyone!
As you guys probably know, calculating the drag coefficient in SimScale gives you a graph of drag coefficient with respect to time so I was wondering if there was a way to calculate a discrete value for it.
Thanks!
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:
Hey @Ricardopg,
Thanks a lot for your response!
Would that mean in steady-state simulations, the last value is the only one that is relevant for other results as well such as velocity and pressure?
No problem!
Yes, in steady-state simulations, the relevant results for all parameters are the ones from last iteration (given that they’re converged).