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August 4, 2006, 09:38 |
information regarding void fraction.
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#1 |
Guest
Posts: n/a
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hi all, can anyone help me how to view void fractions for flow through a cavitation tunnel? and can the cfx mesh be refined manually?? regards, deep
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May 20, 2011, 03:33 |
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#2 |
New Member
M. A.
Join Date: Jul 2010
Posts: 27
Rep Power: 15 |
Hi friends,
I'm simulating a tube with water flow. The tube encounters boiling near the wall. I intend to calculate 'void fraction versus enthalpy' along the channel. Can you help me how to calculate void fraction? I'm in an emergency condition. Waiting for your comments!!! Thanks Everybody |
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May 20, 2011, 06:11 |
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#3 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,703
Rep Power: 143 |
That sounds like the volume fraction of the vapour. This is a normal variable accessible in the post processor.
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May 20, 2011, 06:46 |
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#4 |
New Member
M. A.
Join Date: Jul 2010
Posts: 27
Rep Power: 15 |
Thanks ghorrock for your comment.
So you mean there is no difference between 'void fraction' and 'volume fraction'? Yes I have seen volume fraction in the post processor, but I didn't know they are the same. Again thanks a lot for your guide. All the best |
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May 21, 2011, 07:58 |
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#5 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,703
Rep Power: 143 |
I do not know how you are defining void fraction - but you would think void fraction is the same as gas volume fraction.
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May 21, 2011, 12:18 |
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#6 |
New Member
M. A.
Join Date: Jul 2010
Posts: 27
Rep Power: 15 |
Hi ghorrocks,
Yes you're right. I mean what you said. I've worked in single phase for more than 1 year. But I'm beginner in multiphase flow. Can you help me how to define multiphase in CFX-Pre? Thanks |
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