the flow of air through orifice plate

[ivanhoew]

archived paper from the university of illinois 1932..

http://www.ideals.illinois.edu/bitstrea ... sequence=3

[jfholm]

Great job Robert! I had seen a paper similar to this but could never find it again. Thank you I have saved this. Answers a lot of questions for me.

John

[ivanhoew]

your welcome john , i was particularly interted in the change of coeff with a change in pressure drop , i assume this is to do iwth velocity creating a smaller (damn, can't remember that latin phrase) real world hole.

presumably one would have to apply a coeff. correction to an orifice bench relative to the pressure drop over the plate .

venus contracta ?

[Tony]

http://en.wikipedia.org/wiki/Vena_contracta

[ivanhoew]

hahahaha. nearly right .