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Convergent/divergent nozzle

Convergent/divergent nozzle

Convergent/divergent nozzle

(OP)
Hello all... I was curous if anyone thought that it might be possible to use a convergent/divergent nozzle on the intake of a car. Maybe as a type of natural forced induction. I'm pretty new to this, so if anybody has any ideas, please let me know.

Thanks, stephen

RE: Convergent/divergent nozzle

Most racing engines that are naturally aspirated use some method of locating there air intake in such a fashion as to take advantge of the higher pressure available while the vehicle is in motion. (unless rules restricted not to do so). Take a look under the hood of a Nextel cup car or the hood scoop of a NHRA pro stock and you'll get the idea.-------Phil

RE: Convergent/divergent nozzle

(OP)
Ok... I understand the principle behind ram air. Not what i'm going for. If the air entering the nozzle is subsonic, then passes through the nozzle and becomes supersonic... could you feed this supersonic air into the motor... Like i said, a type of natural forced induction...

RE: Convergent/divergent nozzle

No, a supersonic choke will form and your mass flow rate will remain constant (and low)

Cheers

Greg Locock

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RE: Convergent/divergent nozzle

A convergent/divergent nozzle is capable of producing supersonic flow, but that is not what you want in an air intake. You want maiximum pressure. Energy is required for compression and energy in lost in any nozzle.

RE: Convergent/divergent nozzle

But you could use a convergent/divergent nozzle in the exhaust tip and point it at your competitor's car so that his engine sucks in your exhaust.  Pole position!

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