important: spillway with aerator device

flow_CH · March 1, 2013, 04:34

Hello.

I have very important question.
I have to simulate a spillway with aerator device, in open foam.(for prevention of cavitation)
Can open foam simulate this chute with artificial injection air into the ramp?
or the ramp (eg. offset,groove or ...) is Sufficient for prevention of cavitation?(without injection air into the ramp)
see this pic

flow_CH · March 1, 2013, 09:19

nobody can't help me?

santiagomarquezd · March 1, 2013, 15:41

Yes, using interFoam, but it depends if it includes the treatment of fine bubbles (smaller than the mesh size).

Regards.

flow_CH · March 2, 2013, 00:02

Quote:

Originally Posted by santiagomarquezd

Yes, using interFoam, but it depends if it includes the treatment of fine bubbles (smaller than the mesh size).

Regards.

thanks santiagomarquezd.
but can flow 3d do that? because i don't have any experience in openfoam.

santiagomarquezd · March 2, 2013, 10:02

Well, I think you should ask in a Flow 3D forum, I don't know much about this software but I think it is capable to do so except for the part of the fine bubbles. I have a solver to manage this kind of problems with two scales of interfaces but in OpenFOAM (without cavitation).

Regards.

flow_CH · March 2, 2013, 14:04

Quote:

Originally Posted by santiagomarquezd

Well, I think you should ask in a Flow 3D forum, I don't know much about this software but I think it is capable to do so except for the part of the fine bubbles. I have a solver to manage this kind of problems with two scales of interfaces but in OpenFOAM (without cavitation).

Regards.

i asked this question in flow3d forum but nobody can't help me.
can fluent do that simulation?

santiagomarquezd · March 2, 2013, 18:31

Yes, with the VOF solver, but with the same limitations of FLOW3D.

Regards.

flow_CH · March 3, 2013, 01:57

Quote:

Originally Posted by santiagomarquezd

Yes, with the VOF solver, but with the same limitations of FLOW3D.

Regards.

what are the limitations? can you tell me them?

regards

santiagomarquezd · March 4, 2013, 09:55

Hi. The limitation of VOF is the treatment of the fine bubbles (smaller that the mesh size).

Regards.

March 1, 2013, 04:34	important: spillway with aerator device	#1
flow_CH Senior Member FHydro Join Date: Jan 2013 Posts: 197 Rep Power: 13	Hello. I have very important question. I have to simulate a spillway with aerator device, in open foam.(for prevention of cavitation) Can open foam simulate this chute with artificial injection air into the ramp? or the ramp (eg. offset,groove or ...) is Sufficient for prevention of cavitation?(without injection air into the ramp) see this pic

March 1, 2013, 15:41		#3
santiagomarquezd Senior Member Santiago Marquez Damian Join Date: Aug 2009 Location: Santa Fe, Santa Fe, Argentina Posts: 452 Rep Power: 23	Yes, using interFoam, but it depends if it includes the treatment of fine bubbles (smaller than the mesh size). Regards. __________________ Santiago MÁRQUEZ DAMIÁN, Ph.D. Research Scientist Research Center for Computational Methods (CIMEC) - CONICET/UNL Tel: 54-342-4511594 Int. 7032 Colectora Ruta Nac. 168 / Paraje El Pozo (3000) Santa Fe - Argentina. http://www.cimec.org.ar

March 2, 2013, 10:02		#5
santiagomarquezd Senior Member Santiago Marquez Damian Join Date: Aug 2009 Location: Santa Fe, Santa Fe, Argentina Posts: 452 Rep Power: 23	Well, I think you should ask in a Flow 3D forum, I don't know much about this software but I think it is capable to do so except for the part of the fine bubbles. I have a solver to manage this kind of problems with two scales of interfaces but in OpenFOAM (without cavitation). Regards. __________________ Santiago MÁRQUEZ DAMIÁN, Ph.D. Research Scientist Research Center for Computational Methods (CIMEC) - CONICET/UNL Tel: 54-342-4511594 Int. 7032 Colectora Ruta Nac. 168 / Paraje El Pozo (3000) Santa Fe - Argentina. http://www.cimec.org.ar

March 2, 2013, 18:31		#7
santiagomarquezd Senior Member Santiago Marquez Damian Join Date: Aug 2009 Location: Santa Fe, Santa Fe, Argentina Posts: 452 Rep Power: 23	Yes, with the VOF solver, but with the same limitations of FLOW3D. Regards. __________________ Santiago MÁRQUEZ DAMIÁN, Ph.D. Research Scientist Research Center for Computational Methods (CIMEC) - CONICET/UNL Tel: 54-342-4511594 Int. 7032 Colectora Ruta Nac. 168 / Paraje El Pozo (3000) Santa Fe - Argentina. http://www.cimec.org.ar

March 4, 2013, 09:55		#9
santiagomarquezd Senior Member Santiago Marquez Damian Join Date: Aug 2009 Location: Santa Fe, Santa Fe, Argentina Posts: 452 Rep Power: 23	Hi. The limitation of VOF is the treatment of the fine bubbles (smaller that the mesh size). Regards. __________________ Santiago MÁRQUEZ DAMIÁN, Ph.D. Research Scientist Research Center for Computational Methods (CIMEC) - CONICET/UNL Tel: 54-342-4511594 Int. 7032 Colectora Ruta Nac. 168 / Paraje El Pozo (3000) Santa Fe - Argentina. http://www.cimec.org.ar

March 1, 2013, 09:19		#2
flow_CH Senior Member FHydro Join Date: Jan 2013 Posts: 197 Rep Power: 13	nobody can't help me?

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