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there is a problem with fully developed Nusselt number |
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April 25, 2011, 16:29 |
there is a problem with fully developed Nusselt number
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#1 |
New Member
iman mohammadi
Join Date: Jul 2010
Posts: 11
Rep Power: 16 |
Dear all
as you know, Nusselt number for a fully developed laminar flow in parallel palates should be 7.54 and for example, for kn=0.1 should be 4.75. I have the correct answer for Nusselt number when there is no slip region, but for slip-flow my Nusselt numbers are wrong. I've checked also slip- flow and heat transfer in rectangular microchannels but as same as parallel plates for the slip region fully developed Nusselt number are wrong but temperature profile is correct.It seems to be all correct except Nusselt number. i would appreciate for any help. Last edited by eeman; April 26, 2011 at 19:44. |
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April 17, 2012, 05:14 |
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#2 |
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Learner
Join Date: Nov 2011
Location: Ingolstadt
Posts: 27
Rep Power: 15 |
I am not sure eeman, but the Nusselt number in FLUENT is always wrong for me. It is always very high. I am really not sure how this is evaluated. Also the HTC at the surface. I dont understand what is the T_ref FLUENT considers to calculate HTC and what is the Nusselt number.
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April 19, 2012, 03:48 |
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#3 | |
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Patrick
Join Date: Apr 2012
Posts: 28
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Quote:
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September 24, 2012, 01:36 |
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#4 |
New Member
Join Date: May 2011
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September 24, 2012, 02:36 |
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#5 |
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Learner
Join Date: Nov 2011
Location: Ingolstadt
Posts: 27
Rep Power: 15 |
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