sprayFoam void fraction

dkxls · September 15, 2012, 16:15

Hi,

I'm curious how the void fraction is taken into account in the "new" sprayFoam solver - if at all. I have searched the source code and found the voidFraction class, but it's not clear to me how the the link to the continuous phase is made - again if it is done at all!

Hope somebody can explain it briefly and/or point out some further reading on that topic.

So far I have been using the dieselFoam stuff, where void fraction is definitely not taken into account (as stated here http://www.cfd-online.com/Forums/ope...tml#post180272).

Best regards,
Armin

niklas · September 16, 2012, 14:33

still the same answer. it isn't.

look at the momentum equation for instance, only rho and U in there.

dkxls · September 16, 2012, 14:39

Thanks for the quick answer!

Well, I assumed it since I saw no evidence in the mass or momentum equation. I just wanted to be sure to not miss something.

September 15, 2012, 16:15	sprayFoam void fraction	#1
dkxls Senior Member Armin Join Date: Feb 2011 Location: Helsinki, Finland Posts: 156 Rep Power: 19	Hi, I'm curious how the void fraction is taken into account in the "new" sprayFoam solver - if at all. I have searched the source code and found the voidFraction class, but it's not clear to me how the the link to the continuous phase is made - again if it is done at all! Hope somebody can explain it briefly and/or point out some further reading on that topic. So far I have been using the dieselFoam stuff, where void fraction is definitely not taken into account (as stated here http://www.cfd-online.com/Forums/ope...tml#post180272). Best regards, Armin

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September 16, 2012, 14:33		#2
niklas Super Moderator Niklas Nordin Join Date: Mar 2009 Location: Stockholm, Sweden Posts: 693 Rep Power: 29	still the same answer. it isn't. look at the momentum equation for instance, only rho and U in there.

September 16, 2012, 14:39		#3
dkxls Senior Member Armin Join Date: Feb 2011 Location: Helsinki, Finland Posts: 156 Rep Power: 19	Thanks for the quick answer! Well, I assumed it since I saw no evidence in the mass or momentum equation. I just wanted to be sure to not miss something.