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The Scaling of Pressure Fluctuations From Equal-Tee Piping Components for In-Plant Noise Prediction

[+] Author Affiliations
Denis G. Karczub

SVT-Engineering Consultants, Leederville, Western Australia, Australia

Fred W. Catron, Allen C. Fagerlund

Fisher Controls International LLC, Marshalltown, IA

Paper No. PVP2003-2088, pp. 179-184; 6 pages
  • ASME 2003 Pressure Vessels and Piping Conference
  • Flow-Induced Vibration
  • Cleveland, Ohio, USA, July 20–24, 2003
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4156-1
  • Copyright © 2003 by ASME


An important element of in-plant noise modeling for high-speed gas flow, in addition to the noise generated by control valves, is the noise due to piping system components such as tees which becomes significant at high mass flow rates. An effective tool for the modeling of noise due to piping system components is non-dimensional pressure fluctuation scaling. The current paper outlines procedures for characterization of the internal noise due to an equal tee with unequal outlet flows using non-dimensional pressure fluctuation scaling. Experimental data is presented demonstrating general collapse of the measured data onto a single characteristic curve for several combinations of flow velocity and gas density under steady-state flow conditions. Flow ratios of 1:2, 1:3, 1:4 and 2:3 between each of the two outlet legs from the equal tee are considered, as well as the affect of gas density over a range of 345kPaG to 1380kPaG.

Copyright © 2003 by ASME



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