Help simulating a car radiator boundary conditions

lhcamilo · March 11, 2009, 10:00

Hello everyone,

Lately I have been using openFoam to simulate flows around cars. I have been using harpoon as the main meshing software and simpleFoam as the flow solver.

Long Story short the Car I am trying to simulate now has a set of radiators, which have been modeled after two thin plates. So far I have been running them as solid plates, but now I need to take the simulation a step further. That is to allow the flow to pass through the plates. I have some data to use for this, a pressure gradient.

So I was wondering if anyone could point me to a boundary condition I could use to simulate that.

thanks in advance

leo

rasmus_jensen · March 12, 2009, 09:41

Hi Leo

I would use af Porous zone, it works very well with heat exchangers.

Yours Rasmus

lhcamilo · March 13, 2009, 08:49

thanks for the reply, I will look into it

regards

leo

lhcamilo · March 16, 2009, 08:49

Dear Rasmus

If I may take advantage of your patience for a little bit, I wanted to know how exactly did you model the porous radiator? I have been looking through the forums and so far I have been able to identify two methods

porous zones
porous jump (with cyclic BC)

the radiator I have is pictured by a thin plate, and the only information I have to go on about is the pressure gradient. Which method would be recommended for that.

Any advice is greatly appreciated.

Regards

leo

March 11, 2009, 10:00	Hello everyone, Lately I h	#1
lhcamilo Member Leonardo Honfi Camilo Join Date: Mar 2009 Location: Delft, Zuid Holland, The Netherlands Posts: 60 Rep Power: 17	Hello everyone, Lately I have been using openFoam to simulate flows around cars. I have been using harpoon as the main meshing software and simpleFoam as the flow solver. Long Story short the Car I am trying to simulate now has a set of radiators, which have been modeled after two thin plates. So far I have been running them as solid plates, but now I need to take the simulation a step further. That is to allow the flow to pass through the plates. I have some data to use for this, a pressure gradient. So I was wondering if anyone could point me to a boundary condition I could use to simulate that. thanks in advance leo

March 12, 2009, 09:41	Hi Leo I would use af Porou	#2
rasmus_jensen New Member Rasmus Jensen Join Date: Mar 2009 Location: Skive, Denmark Posts: 1 Rep Power: 0	Hi Leo I would use af Porous zone, it works very well with heat exchangers. Yours Rasmus

March 13, 2009, 08:49	thanks for the reply, I will l	#3
lhcamilo Member Leonardo Honfi Camilo Join Date: Mar 2009 Location: Delft, Zuid Holland, The Netherlands Posts: 60 Rep Power: 17	thanks for the reply, I will look into it regards leo

March 16, 2009, 08:49		#4
lhcamilo Member Leonardo Honfi Camilo Join Date: Mar 2009 Location: Delft, Zuid Holland, The Netherlands Posts: 60 Rep Power: 17	Dear Rasmus If I may take advantage of your patience for a little bit, I wanted to know how exactly did you model the porous radiator? I have been looking through the forums and so far I have been able to identify two methods porous zones porous jump (with cyclic BC) the radiator I have is pictured by a thin plate, and the only information I have to go on about is the pressure gradient. Which method would be recommended for that. Any advice is greatly appreciated. Regards leo

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