# Obtaining Nu result from internal fin channel

 Register Blogs Members List Search Today's Posts Mark Forums Read

 March 1, 2007, 10:06 Obtaining Nu result from internal fin channel #1 andrew Guest   Posts: n/a Sponsored Links I got a problem obtaining Nusselt number data from an internal fin channel...i have used line and rake surface (outer surface) to obtained the data from a 3D rectangular channel...however the results that i have obtained does not coincide with the theory or a specific trend...i am not sure whether the approach that i am using is right...i hope some of u could share some light to this problem...cheers

 March 1, 2007, 10:26 Re: Obtaining Nu result from internal fin channel #2 lee Guest   Posts: n/a Nu=fn(h) Check heat transfer coefficient that you are using. If I am right, there should be different heat transfer coefficient in FLUENT, such as surface or local heat transfer coefficient. Most of theories use heat transfer cofficent which is based on bulk heat transfer coefficient.

 March 1, 2007, 22:38 Re: Obtaining Nu result from internal fin channel #3 andrew Guest   Posts: n/a Thank you lee for u r quick reply..the heat transfer coefficient that is specify in fluent is surface heat transfer coefficient..which has the formula of heff=q/(Twall-Tref) 1) What my concern is the Twall temperature that Fluent is picking...it is corresponding to each wall node temperature in the line/rake surface that i have specify? 2) Can surface integral option be used for a line/rake surface?

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post ElanMorin FLUENT 4 February 25, 2015 17:26 MrFuglsang OpenFOAM Running, Solving & CFD 1 May 30, 2011 05:58 guoxj CFX 18 October 23, 2010 20:37 cadcamvijay FLUENT 0 March 19, 2009 03:03 xiuying OpenFOAM Running, Solving & CFD 12 March 2, 2009 08:58