
[Sponsors] 
September 9, 2013, 14:57 
How fluent calculate heattransfercoefficient?

#1 
Member
Join Date: Oct 2012
Posts: 44
Rep Power: 6 
Sponsored Links
I have a simple test, a cube 1*1*0,2 (l*l*x). Boundary condition T1=350°K in upper face, T2=300°k in opposite face, k=200. So Q=k/x*A*(T1T2)=50000 Fluent report flux no problem, Q=50000 as formula, but I want to export heattransfercoefficient for every cells. he must be 1000, but fluent calculate 1.2194E+003. Why? For this case I insert only 1 cell mesh. 

Sponsored Links 
September 9, 2013, 17:55 

#3 
Member
Join Date: Oct 2012
Posts: 44
Rep Power: 6 

September 9, 2013, 18:20 

#5 
Member
Join Date: Oct 2012
Posts: 44
Rep Power: 6 

September 10, 2013, 03:12 

#7 
Member
Join Date: Oct 2012
Posts: 44
Rep Power: 6 
Yes, in simple case. But when I have a complex structure whit fins?
Goal is to understand how fluent calculate this rate or I can calculate this from ''fluentexport''. So I can tell: this is average of structure from report flux. That is report flux=Q, U=Q/A/(T1T2). From mesh I can calculate every single Q(i) by cells, so I can compare average with single station to see the difference and if this difference is high. Imagine a structure like this: 

September 10, 2013, 03:47 

#9 
Member
Join Date: Oct 2012
Posts: 44
Rep Power: 6 

September 18, 2013, 10:55 

#10 
Member
Join Date: Oct 2012
Posts: 44
Rep Power: 6 

Thread Tools  
Display Modes  


Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
calculate heat transfer coefficient in repeated geometry  mullenc525  CFX  4  January 24, 2017 15:30 
heat transfer coefficient as initial value  tH3f0rC3  OpenFOAM  8  November 29, 2016 11:43 
Heat Transfer Coefficient in Fluent  kalene86  FLUENT  0  July 25, 2013 13:23 
Heat Transfer Coefficient in Compressible Flow 3D turbine cascade  Karkoura  CFX  0  March 10, 2011 16:35 
heat transfer coefficient  ravi  FLUENT  0  July 23, 2004 00:08 
Sponsored Links 