Compressible flowfield characteristics of butterfly valves

M. J. Morris, J. C. Dutton

Research output: Contribution to journalConference articlepeer-review


The results of an experimental investigation into the flowfield characteristics of butterfly valves under compressible flow operating conditions are reported. The experimental results include Schlieren and surface flow visualization and flowfield static pressure distributions. Two valve disk shapes have been studied in a planar, two-dimensional test section: a generic biconvex circular arc profile and the midplane cross-section of a prototype circular valve. The valve disk angle and operating pressure ratio have also been varied. The results demonstrate that under certain conditions of operation the butterfly valve flowfield can be extremely complex with oblique shock waves, expansion fans, and regions of flow separation and reattachment. In addition, the sensitivity of the valve disk surface pressure distributions to the local geometry near the leading and trailing edges and the relation of the aerodynamic torque to flow separation and reattachment on the disk are shown.

Original languageEnglish (US)
Pages (from-to)WA/FE12 8p
JournalAmerican Society of Mechanical Engineers (Paper)
StatePublished - 1988
Externally publishedYes
EventPreprint - American Society of Mechanical Engineers - Chicago, IL, USA
Duration: Nov 27 1988Dec 2 1988

ASJC Scopus subject areas

  • Mechanical Engineering


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