# Heat Transfer Coefficient

 User Name Remember Me Password
 Register Blogs Members List Search Today's Posts Mark Forums Read

 May 28, 2013, 13:31 Heat Transfer Coefficient #1 New Member   Join Date: Mar 2010 Posts: 4 Rep Power: 9 Sponsored Links Hi! Might be a stupid question, but I have not been able to find the answer to it. How does Fluent calculate the convective heat transfer between a fluid and a solid? Usually for convective heat transfer a heat transfer coefficient (HTC) is needed, but this is (as far as I know) not available in Fluent. One can get an approximation of the HTC, but fr that you need to specify a fixed reference temperature and the HTC is calculated based on this temperature, the wall temperature and the heat flux. But how does it get the heat flux to start with? Sorry if it's a "basic" question, but I would really appreciate if someone has the answer or can point me in a direction where I can find it.

 May 29, 2013, 03:16 #2 Member   Musango Lungu Join Date: Dec 2011 Location: China Posts: 73 Rep Power: 7 Heat transfer coefficient between a solid and particle is calculated using two correlations available in FLUENT i.e. Ranz-Marshall and Gunn correlations. However to access these you must first enable the heat equation in the model tab and specify the thermo physical properties of the phases. There is no input for heat flux because the htc is calculated from the Nusselt correlation as given by Ranz-Marshall and Gunn.

 June 4, 2013, 15:35 #3 Senior Member   Join Date: Mar 2009 Location: Indiana, US Posts: 185 Rep Power: 10 If you fluid-solid interface is an interior (conjugate heat transfer) then the heat flux is calculated from the energy transport equation between solid and fluid. If the interface is a wall (you've not modeled the solid) then you need to define either a temperature or an htc on that wall and heat flux is calculated from them. Regards Luke

 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 Alberto Schroth FLUENT 14 September 9, 2015 10:00 sakil2k3 FLUENT 4 July 5, 2015 15:07 Karkoura CFX 0 March 10, 2011 16:35 Sas CFX 15 July 13, 2010 08:56 los OpenFOAM Running, Solving & CFD 5 January 31, 2010 18:44