Noise and vibration induced by oscillating supersonic flow in a pressure reducing gas valve.

Masami Nakano, E. Outa, K. Tajima

Research output: Contribution to journalArticlepeer-review

Abstract

Generation of intense aerodynamic noise and vibration from a high pressure gas valve might have close relation to the flow patterns particular to the valve trim geometry and the flow condition. Characteristics of acoustic models inside a model valve and of dynamic force acting to the valve stem were investigated by experiments. Special emphasis was placed on the exhibition of supersonic flow patterns which were essential to induce the noise and the force. A blow down facility was used, and at the discharge port of 10 mm diameter, a plane valve seat and a cylindrical chest were coaxially mounted. A conical plug was supported in the port axis by a stem. Compressed air was discharged through the valve to the atmosphere. The pressure ratio was up to twenty and the isentropic Mach number ranges to 2.5. Four typical patterns of flow in the supersonic regime were observed by Schlieren photography and the two extreme patterns were simulated by a numerical analysis of the FLIC method. (from authors' abstract)

Original languageEnglish
JournalIN: SYMP. ON FLOW-INDUCED VIBRATIONS, ASME WINTER ANNUAL MEETING, (NEW ORLEANS, U.S.A.: DEC. 9-14, 1984), M.P. PAIDOUSSIS; M.
Volume4 , New York, U.S.A., Am. Soc. Mech. Engrs., 1984, p.87-103.
Publication statusPublished - 1984 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)

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