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hugocis January 3, 2013 12:02

CFDesign CFD module
 
Does anybody know how to simulate a cooling system of a bus using autodesk CFD soft? I am having serious problems modeling the heat exchangers which are evaporators in my case. I can provide pictures or CAD files if needed.
Thanks you

Mithrandir January 8, 2013 16:30

are you trying to simulate the flow through the heat exchangers?

if you are looking for a overall "Macro" solution... use a distributed resistance for the Hx..... try to get a pressure drop curve vs flow rate from the Hx vendor.... if it is a decent Hx.. at sea level.. you could prolly use a 2 inch of H2O pressure drop at all flow rates....(Velocities)

hugocis January 9, 2013 04:14

Thank you for your reply. What i have done is to define those exchangers as volumic BC with a negative total heat generation. What do you think of that? i haven't have results yet...

marktm250xc January 11, 2013 10:45

Yes, you could apply a negative heat generation. 2013 added a new heat exchanger material with more options. Go to the Autodesk Help wiki and search for heat exchanger materials.


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