Sparweb
Aerospace
- May 21, 2003
- 5,174
I'm thrashing about for a way to deal with a "jet" that emerges from a plate at an oblique angle. The air flow is conducted to the manifold with hoses and fittings with an ID of about 0.28". It then arrives at a tube that is welded to a flat plate at a 15 degree angle. The exhaust hole is now elliptical. Normally one would expect a jet like this to be attached tangent to the radius of the turbine, but not this time!
The jet of air impinges on an axial-flow turbine. I am sort-of reverse-engineering the turbine, which I can handle, but the flow coefficient at this port keeps coming out >1! The objective of the project is to insert a flow restriction in the air supply line to keep the turbine from overspeeding.
Thanks in advance for the help you can provide. Please bear in mind that I'm a structural eng, so I'm full of stupid questions about fluids.
In case you want some more numbers, P=75-80 psi, D=0.28", rho=0.20 lbm/ft^3.
STF
The jet of air impinges on an axial-flow turbine. I am sort-of reverse-engineering the turbine, which I can handle, but the flow coefficient at this port keeps coming out >1! The objective of the project is to insert a flow restriction in the air supply line to keep the turbine from overspeeding.
Thanks in advance for the help you can provide. Please bear in mind that I'm a structural eng, so I'm full of stupid questions about fluids.
In case you want some more numbers, P=75-80 psi, D=0.28", rho=0.20 lbm/ft^3.
STF
