Influence of diffuser angle on discharge coefficient of sonic nozzles for flow-rate measurements

  • Li C
  • Peng X
  • Wang C
  • 5

    Readers

    Mendeley users who have this article in their library.
  • 8

    Citations

    Citations of this article.

Abstract

A series of numerical simulations were conducted to investigate the influence of diffuser angle on discharge coefficient of sonic nozzles for gas flow-rate measurements satisfied with the regulation of ISO-9300 and operated at atmospheric condition with throat diameter from 0.15 to 5 mm and 2.0×103≤Red≤6.6×104. When throat diameters are larger than 1 mm, the discharge coefficients are almost the same for nozzles with different diffuser angles, while they increase with increasing diffuser angle for smaller nozzles. A concept or effective critical flow was introduced to explore the effect of diffuser angle on discharge coefficient. Using a new parameter, effective throat diameter or deviation of effective throat diameter from the minimum effective diameter δ, a very good description is derived to discuss the effect of diffuser angle on the discharge coefficient. © 2010 Elsevier Ltd.

Author-supplied keywords

  • Diffuser angle
  • Discharge coefficient
  • Effective diameter
  • Sonic nozzle

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • C. H. Li

  • X. F. Peng

  • C. Wang

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free