Does the simulator use SI units? Are emitStartTime and emitEndTime in seconds?

[Aoko-Tao]

Hello,
Thanks again for making this excellent simulator available!
About three months ago, I posted a question here: [Discussion #355]
It might have been missed, so I hope it's okay to follow up with a new thread to summarize my main questions:

1. Does the simulator use SI units? For example, does velocity = 1 mean 1 m/s?
2. Are emitStartTime and emitEndTime in seconds?
3. In [Discussion Units for viscosity? #170], you mentioned that the viscosity parameter is scale-dependent. Are there any other parameters that are similarly affected by scale? Specifically: If I set the velocity of an Emitter to 1, does that represent 1 m/s for the emitted particles? Could this velocity be affected by particleRadius or emitter width？

I’d be really grateful for any clarification whenever you have a moment. Apologies for the repeat post and thank you for your time!

[janbender]

1. Yes.
2. Yes.
3. The viscosity parameter is not a special parameter in our simulation. It is the kinematic viscosity. Maybe scale-dependent is not the right word. The parameter itself does not depent on scale. However, a large body of fluid will behave in a different way than a small one. So you may not see the coiling effect if you have a large-scale simulation. The emitter velocity is in m/s,

[Aoko-Tao]

Got it! Thanks a lot — really helped and cleared things up.