Flow through an orifice drops significantly
Flow through an orifice drops significantly
(OP)
I remember Porsche having issues in the 1998 racing season due to the size of the air restrictor for there turbo engine and also due to were they could place this restrictor. The reason was that the airflow approached the speed of sound. I would love someone to explain to me in laymen’s terms why the following happens. Flow through an orifice drops significantly at 0.5 times the speed of sound, i.e. mach index Z=0.5?
Paul
p_guincho@yahoo.com
Paul
p_guincho@yahoo.com





RE: Flow through an orifice drops significantly
Much of this will depend on the actual geometry of the orifice. Also, your intake system could have a pressure wave traveling back and forth due to the piston engine (but I'm not an automotive guy).
Anyway, that's the general idea.
--
Joseph K. Mooney
Director, Airframe Structures - FAA DER
Delta Engineering Corporation