can some of the same principles from air be applied to fluid dynamics?
can some of the same principles from air be applied to fluid dynamics?
(OP)
Trying to move water through a curved and angled tube at 100+ mph and I have a pinch point part way down. Can I put a slite curve in the sides to help eliminate this? Much like how the fueselage is narrowed at the winng attachment point in an airplane to decrease drag.





RE: can some of the same principles from air be applied to fluid dynamics?
That trick helps with compressible flow at transonic speeds.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: can some of the same principles from air be applied to fluid dynamics?
RE: can some of the same principles from air be applied to fluid dynamics?
Cheers
Greg Locock
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RE: can some of the same principles from air be applied to fluid dynamics?
Do you just mean you want to eliminate a sharp 'step' and put a smooth change of cross section instead?
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: can some of the same principles from air be applied to fluid dynamics?
RE: can some of the same principles from air be applied to fluid dynamics?
It may be hard to get general information. In gas flow the most interest lies in the formation of a shock wave within the nozzle, a result of compressibility - which water doesn't have much of. In typical liquids the use of a convergent nozzle is to accelerate the fluid to become a free jet in air or an unstable stream that atomizes the fluid into small droplets.
You may wish to view some of the material here: http://web.mit.edu/hml/ncfmf.html particularly Fundamentals-Boundary Layers which covers divergent nozzles. The presentation on Cavitation also may be applicable as you are using an impeller.
RE: can some of the same principles from air be applied to fluid dynamics?
Go and look at some regardless.
Mike Halloran
Pembroke Pines, FL, USA
RE: can some of the same principles from air be applied to fluid dynamics?
RE: can some of the same principles from air be applied to fluid dynamics?
RE: can some of the same principles from air be applied to fluid dynamics?