Discharge coefficients for choked gas-liquid flow through nozzles and orifices and applications to safety devices

Stanley D Morris

Research output: Contribution to journalArticle

Abstract

A choked flow model is employed to analyse the available experimental data on compressible gas-liquid flow through nozzles and sharp-edged orifice plates. The data satisfying the conditions for choked flow are subjected to further analysis to determine correlations for the discharge coefficients. It is demonstrated that choking mass flowrates can be predicted to within ±6% for nozzles and ±7% for sharp-edged orifice plates. These correlations for discharge coefficients are intended to be of a general nature and ought to lend some confidence to their applicability outside the ranges of experimental parameters. The applicability of these results to pressure relief valves and rupture discs is also discussed. © 1990.

Original languageEnglish
Pages (from-to)303-310
Number of pages8
JournalJournal of Loss Prevention in the Process Industries
Volume3
Issue number3
Publication statusPublished - Jul 1990

Keywords

  • flashing flow
  • modelling
  • pressure vessels

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