heat transfer coeff and ambient temperature

gupta29505 · January 14, 2015, 16:55

Hi All,

How do I define heat transfer coeff and ambient temperature convection type boundary condition in "Heat transfer and buoyancy-driven flows" OpenFOAM standard solvers.

Thanks,
gupta

ahmmedshakil · January 14, 2015, 19:45

Hi gupta,
You can use groovyBC (https://openfoamwiki.net/index.php/Contrib/groovyBC) boundary condition for this. It's so easy to impose convection heat transfer boundary with this.

cheers
shakil

gupta29505 · January 15, 2015, 11:59

Thank you very much Shakil. I am sorry, I was not able to figure it out. Can you please send me some example.

Thank you again.

Gupta

ssss · January 15, 2015, 15:54

Do you mean a Marangoni boundary type?

gupta29505 · January 15, 2015, 16:28

It is a heat flux boundary condition where heat flux is defined as

Q/A = h (T - Tambient)

User defines h and Tambient

T is the temperature of cell next to wall.

Thanks,

ssss · January 15, 2015, 16:48

Search in the forum for Robinson boundary there have been lots of topics about it.

ahmmedshakil · January 15, 2015, 21:23

http://www.cfd-online.com/Forums/ope...acianfoam.html

gupta29505 · January 15, 2015, 21:50

Thank you, This link is very clear.

January 14, 2015, 16:55	heat transfer coeff and ambient temperature	#1
gupta29505 Member freelancer.cae Join Date: Feb 2014 Location: USA Posts: 52 Rep Power: 12	Hi All, How do I define heat transfer coeff and ambient temperature convection type boundary condition in "Heat transfer and buoyancy-driven flows" OpenFOAM standard solvers. Thanks, gupta

January 15, 2015, 11:59	Thank you	#3
gupta29505 Member freelancer.cae Join Date: Feb 2014 Location: USA Posts: 52 Rep Power: 12	Thank you very much Shakil. I am sorry, I was not able to figure it out. Can you please send me some example. Thank you again. Gupta

January 15, 2015, 16:28	thanks	#5
gupta29505 Member freelancer.cae Join Date: Feb 2014 Location: USA Posts: 52 Rep Power: 12	It is a heat flux boundary condition where heat flux is defined as Q/A = h (T - Tambient) User defines h and Tambient T is the temperature of cell next to wall. Thanks,

January 15, 2015, 21:50	Thank you	#8
gupta29505 Member freelancer.cae Join Date: Feb 2014 Location: USA Posts: 52 Rep Power: 12	Thank you, This link is very clear.

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January 14, 2015, 19:45		#2
ahmmedshakil Senior Member Mohammad Shakil Ahmmed Join Date: Oct 2012 Location: AUS Posts: 137 Rep Power: 15	Hi gupta, You can use groovyBC (https://openfoamwiki.net/index.php/Contrib/groovyBC) boundary condition for this. It's so easy to impose convection heat transfer boundary with this. cheers shakil

January 15, 2015, 15:54		#4
ssss Senior Member anonymous Join Date: Aug 2014 Posts: 205 Rep Power: 13	Do you mean a Marangoni boundary type?

January 15, 2015, 16:48		#6
ssss Senior Member anonymous Join Date: Aug 2014 Posts: 205 Rep Power: 13	Search in the forum for Robinson boundary there have been lots of topics about it.

January 15, 2015, 21:23		#7
ahmmedshakil Senior Member Mohammad Shakil Ahmmed Join Date: Oct 2012 Location: AUS Posts: 137 Rep Power: 15	http://www.cfd-online.com/Forums/ope...acianfoam.html