VOF

ignacio · July 13, 2016, 06:31

Hello everyone,

I will use this thread to post an issued that I am having.

I am using the VOF to model a pool and a gas space, with a velocity-inlet boundary condition injecting water at the bottom of the tank. The rest of the boundaries are walls with no-slip.
I am using a 2D axisymmetric model (with x-axis set as axis of rotation).

Checking the Report>Fluxes>Mass flow rate>Net shows that I am injecting a correct amount of water through the velocity-inlet boundary condition.

However, the liquid level in the pool increases at a much slower rate than what it should, based on the injection rate .

What could be the reason for this?
I have double checked the density of the fluids, pool dimensions, mass flow rate injected into the pool, and they seem to be correct.

Thanks in advance! =)
Ignacio

ghorrocks · July 14, 2016, 06:08

You posted this on the CFX forum. This appears to be a Fluent question so I have moved it to a new thread on the Fluent multiphase forum. Please post on the correct forum in future.

July 13, 2016, 06:31	VOF	#1
ignacio Member Ignacio Join Date: Jan 2013 Posts: 33 Rep Power: 13	Hello everyone, I will use this thread to post an issued that I am having. I am using the VOF to model a pool and a gas space, with a velocity-inlet boundary condition injecting water at the bottom of the tank. The rest of the boundaries are walls with no-slip. I am using a 2D axisymmetric model (with x-axis set as axis of rotation). Checking the Report>Fluxes>Mass flow rate>Net shows that I am injecting a correct amount of water through the velocity-inlet boundary condition. However, the liquid level in the pool increases at a much slower rate than what it should, based on the injection rate . What could be the reason for this? I have double checked the density of the fluids, pool dimensions, mass flow rate injected into the pool, and they seem to be correct. Thanks in advance! =) Ignacio

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July 14, 2016, 06:08		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	You posted this on the CFX forum. This appears to be a Fluent question so I have moved it to a new thread on the Fluent multiphase forum. Please post on the correct forum in future.