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E-man930 E-man930 is offline
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Join Date: May 2005
Location: Atlanta GA
Posts: 624
Sorry Craig but that is incorrect...
Physics proves this. Simply put - path of least resistance.


If you want a refresh of what should be taken in to consideration when designing an intercooler see below.

Let's not model our concepts of the flow of air inside the intercooler based on tests of flowing water through the intercooler.
(gravity and mass play an important part of liquid state flow calculation here... remember we are dealing with gas - constantly expanding molecules that fill the space they occupy)
When dealing with gas in an environment that already sees 1 ATM pressure (remember we are not in space here) you are not introducing air into the intercooler, it is already there. You are simply adding air to the existing air... pressurizing the unit. Now within the endtanks - empty space - there is no resistance. Within the core part (or radiator) of the intercooler, the air will encounter some resistance due to the friction the air is encountering flowing against, around and through the aluminum fins inside the tubes vs the open end tanks on either end. This is actually measured as the pressure drop of the core - the difference of the pressure in vs. out. Internal ducting has very little if any effect given the above situation. This is not taking into consideration the law of convection and considering external irregular heat zones (engine) + the properties of aluminum (convection rate of the metal alloy used) that influence the interaction of gas molecules inside the unit due to thermal differences encountered by the gas, nor taking into account the temperature of the air coming out of the turbo or the velocity it achives accelerated out of the turbine unit and hurdled into the intercooler inlet. The velocity of the gas combined with the constraints (intercooler end tank) it meets does produce turbulance, and turbulance is what you may have been referring to... To avoid as much turbulence as possible the air needs to encounter as smooth a path as possible. This is why you will always see high end intercoolers devoid of sharp angles and edge - this type of design increases turbulance. Based on the smooth cast end tank design used in the construction of this unit, it should prove it to flow very uniform in direction, thus destributing the airflow rather well across the intercooler core.

Last edited by E-man930; 08-13-2007 at 05:43 PM..
Old 08-13-2007, 04:49 PM
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