View Single Post
Flieger Flieger is offline
Max Sluiter
 
Flieger's Avatar
 
Join Date: Mar 2006
Location: So Cal
Posts: 19,572
Garage
I thought that the dynamic pressure(velocity sort of) + static pressure(pressure on the walls of the tube) = a constant (temperature related).

Wouldn't the static pressure drop and dynamic pressure increase at a neck-down tube and then go the other way after the restriction, thereby negating the effect of the smaller tube?

All of this is in the laminar flow, low mach number realm.

The energy loss would be more due to the more turbulent boundary layer at the higher gas velocities and the energy required to speed up the air temporarily.

Boost pressure should still be good, though?
__________________
911S
1971 chassis, 2.7RS spec MFI engine, suspension mods, lightened

Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance
http://www.flickr.com/photos/max_911_fahrer/
Old 08-28-2008, 04:17 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)