simple turbine design
simple turbine design
(OP)
I wish to spin up a disk 100mm to 20,000+ RPM for a test rig. At the moment I can get around 16,000 rpm with a compressed air nozzle and simple turbine. Any advice on turbine/nozzle configuration in order to optimize design.





RE: simple turbine design
Mike Halloran
Pembroke Pines, FL, USA
RE: simple turbine design
RE: simple turbine design
RE: simple turbine design
http://www.foxvalve.com/frameset-venturi.html
RE: simple turbine design
try these guys: http://www.barbourstockwell.com/
RE: simple turbine design
RE: simple turbine design
I don't know where to buy such a nozzle. I know small ones exist because we used them in wind tunnel testing. Maybe a laboratory equipment supply catalog?
RE: simple turbine design
http://ntr
As Jstephen suggested, an air-driven router may be a good item to purchase, and disassemble to learn something about how to make a high-speed turbine. Forget supersonic nozzles, or any nozzle for that matter; you want to harness the expansion of the air to produce torque at very high rpm: you will need to make an axial-flow turbine, or possibly a mixed (axial/radial) turbine.
A quick back-of-the-envelope calc. using the moment coefficients from the above paper suggests that you might get a 1/4-hp air or electric router to spin the disk to 20k rpm in air. Balancing the disk for that speed, and keeping everything intact may be a problem. Suggest you watch this test from a distance, and keep yourself and anything/body else out of the "plane of rotation". Better, do it like the pros (barbour stockwell) and put it in a pit or stack concrete blocks around it.
RE: simple turbine design
RE: simple turbine design
http:/
Ted