Air Bubble

pezarello86 · March 27, 2020, 08:19

Hi,
i am involved in a R&D project on bubble curtains.
First of all i want to validate the methodology to create the air bubble and especially the velocity field inducedny the bubble rising.
I found different papers and about this topic i found also the experimental results.
The model is made of a rectangulare domain with an airbubble at the bottom (slightly above the bottom) in a quiescent water: the bubble rise to buoyancy force.
the setup of simulations a multiphase model: VOF+Level set functions. I am using the same setup of the paper and my proble is aùhow to recognise the uprise velocity of air bubble because the bubble breaks.
Does someone can help me?
Thank you very much

vinerm · March 27, 2020, 11:50

You have not mentioned what help do you require? Do you need help with setup or with convergence or something else?

pezarello86 · March 30, 2020, 08:11

Sorry you are right.
By the way i solved by myself.
thank you again and fro the next time i will try to be more accurate on what kinf of help i need

March 27, 2020, 08:19	Air Bubble	#1
pezarello86 New Member Giuseppe Join Date: Jan 2013 Location: Italy Posts: 15 Rep Power: 13	Hi, i am involved in a R&D project on bubble curtains. First of all i want to validate the methodology to create the air bubble and especially the velocity field inducedny the bubble rising. I found different papers and about this topic i found also the experimental results. The model is made of a rectangulare domain with an airbubble at the bottom (slightly above the bottom) in a quiescent water: the bubble rise to buoyancy force. the setup of simulations a multiphase model: VOF+Level set functions. I am using the same setup of the paper and my proble is aùhow to recognise the uprise velocity of air bubble because the bubble breaks. Does someone can help me? Thank you very much

March 27, 2020, 11:50	Help	#2
vinerm Senior Member Vinerm Join Date: Jun 2009 Location: Nederland Posts: 2,946 Blog Entries: 1 Rep Power: 35	You have not mentioned what help do you require? Do you need help with setup or with convergence or something else? __________________ Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.

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March 30, 2020, 08:11		#3
pezarello86 New Member Giuseppe Join Date: Jan 2013 Location: Italy Posts: 15 Rep Power: 13	Sorry you are right. By the way i solved by myself. thank you again and fro the next time i will try to be more accurate on what kinf of help i need