simulate a radiator

NazaninCFD · April 1, 2015, 15:44

hi
Does anyone know how can i simulate a radiator with 70c surface temperature in a room?Should i combine natural convection with radiation models?i want to see radiator's effect on temperature of room,i have no experience in this case

can you lead me?

thank you
NazaniN

Bionico · April 2, 2015, 03:15

Hello Nazanin,
you have to activate gravity in order to model natural convection: I suggest using Boussinesq approximation because it helps convergence.
In your case maybe radiation is negligible, anyway you can activate it afterwards: try with a simpler model first, you can complicate it more and more.

Best Regards

NazaninCFD · April 2, 2015, 11:35

hi again and thanks Bionico
because my radiator is a glass radiator so I think radiation model is very important in this case and i haven't any Experience in use Radiation models, In your opinion Which model of radiation is better for this case and other Key Settings for that model?

thanks
NazaniN

Bionico · April 2, 2015, 12:00

Dear Nazanin,
in presence of transparent or semi-transparent walls you should use DO Model for radiation (otherwise you can use S2S).I suggest reading carefully Fluent Manual about Radiation (it's well explained what are the limitations of every models).

Best regards

NazaninCFD · April 2, 2015, 13:49

Thank you very much Bionico

April 1, 2015, 15:44	simulate a radiator	#1
NazaninCFD New Member Nazanin Join Date: Apr 2015 Posts: 3 Rep Power: 11	hi Does anyone know how can i simulate a radiator with 70c surface temperature in a room?Should i combine natural convection with radiation models?i want to see radiator's effect on temperature of room,i have no experience in this case can you lead me? thank you NazaniN ArmanCFD likes this.

April 2, 2015, 03:15		#2
Bionico Senior Member Flavio Join Date: Sep 2011 Location: Brescia, Italy Posts: 181 Rep Power: 15	Hello Nazanin, you have to activate gravity in order to model natural convection: I suggest using Boussinesq approximation because it helps convergence. In your case maybe radiation is negligible, anyway you can activate it afterwards: try with a simpler model first, you can complicate it more and more. Best Regards NazaninCFD and ArmanCFD like this. __________________ Bionico

April 2, 2015, 12:00		#4
Bionico Senior Member Flavio Join Date: Sep 2011 Location: Brescia, Italy Posts: 181 Rep Power: 15	Dear Nazanin, in presence of transparent or semi-transparent walls you should use DO Model for radiation (otherwise you can use S2S).I suggest reading carefully Fluent Manual about Radiation (it's well explained what are the limitations of every models). Best regards chaitanyaarige and NazaninCFD like this. __________________ Bionico

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
modeling car radiator	petrile_83	OpenFOAM Running, Solving & CFD	1	January 5, 2017 04:11
Porous panel for airflow over a radiator with simpleFoam?	Doug68	OpenFOAM Running, Solving & CFD	0	May 14, 2012 01:11
Simulate the wind profile on a wind turbine---> HOW ????	mohammad	Main CFD Forum	0	April 13, 2012 08:16
Panel radiator model	Aleksander	Main CFD Forum	3	May 9, 2009 15:31
Car Radiator Modeling	PascalouM	CFX	1	June 27, 2008 04:38

April 2, 2015, 11:35		#3
NazaninCFD New Member Nazanin Join Date: Apr 2015 Posts: 3 Rep Power: 11	hi again and thanks Bionico because my radiator is a glass radiator so I think radiation model is very important in this case and i haven't any Experience in use Radiation models, In your opinion Which model of radiation is better for this case and other Key Settings for that model? thanks NazaniN

April 2, 2015, 13:49		#5
NazaninCFD New Member Nazanin Join Date: Apr 2015 Posts: 3 Rep Power: 11	Thank you very much Bionico