Noise or sound through an orifice
Noise or sound through an orifice
(OP)
Gentlemen:
Does anyone have any suggested handbooks, sources or equations for determining noise level (db) through
restriction orifices?
thanks
Does anyone have any suggested handbooks, sources or equations for determining noise level (db) through
restriction orifices?
thanks





RE: Noise or sound through an orifice
RE: Noise or sound through an orifice
http://www.grc.nasa.gov/WWW/AcousticalTest/PDF/REDUCED_NOISE.pdf
Hope this can be of help to you.
RE: Noise or sound through an orifice
R.O.'s have not been generally characterized for noise. With thin plate designs, not only the jet noise but the FIV of the plate must be considered.
It is a real problem. Basically, you have to assume that all critical flow applications will be noisy and consider use of a control valve instead. In liquids, cavitation and hydrodynamic noise is a serious issue.
Where R.O.'s are used as a valve free restriction, you will be forced to use cascaded restrictions or rely on proprietary designs (thick plates/restriction tubes).
RE: Noise or sound through an orifice
bk