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Old   January 3, 2013, 12:02
Default CFDesign CFD module
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Francis
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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.
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Old   January 8, 2013, 16:30
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Mike Stroup
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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)
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Old   January 9, 2013, 04:14
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Francis
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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...
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Old   January 11, 2013, 10:45
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Mark Decker
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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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