Forced vortex

anderubi · April 26, 2021, 14:44

I'm making a report in college about forced vortice. I have to contrast the results obtained with the formula h=(w^2*r^2)/2g with the simulation. The problem is that for an w=20,94rad/s and radius=97mm, h=0.21m. However, in the simulation, as you can see in the attached photo, the height that I get is h=0.125m. Does anyone know what mistake I'm making and how to fix it? Thank you.

cwl · April 27, 2021, 00:11

First of all - I'd refine the mesh, preferably at the air-liquid interface, it is definitely too smeared.
Second - do you track the mass of fluid during the simulation to make sure that it is conserved?

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April 27, 2021, 00:11		#2
cwl Senior Member Chaotic Water Join Date: Jul 2012 Location: Elgrin Fau Posts: 437 Rep Power: 18	First of all - I'd refine the mesh, preferably at the air-liquid interface, it is definitely too smeared. Second - do you track the mass of fluid during the simulation to make sure that it is conserved?