Highly viscous liquid flow in pipeline components

D. A. McNeil, A. D. Stuart

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Water and an aqueous glycerine solution were used to obtain liquids with nominal viscositie of 1 and 550 mPa s. These fluids were used to obtain friction factors for pipe flows, discharge coefficients for orifice plates and nozzles, and loss coefficients for an abrupt enlargement, a nozzle, an orifice plate, and a globe valve in the Reynolds number range 10-200. Existing methods are shown to be adequate for the prediction of friction factors and discharge coefficients, but inadequate for the prediction of loss coefficients. Insight is given into the flow behaviour that is associated with the loss coefficients. © IMechE 2005.

Original languageEnglish
Pages (from-to)267-281
Number of pages15
JournalProceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
Issue number3
Publication statusPublished - Mar 2005


  • Abrupt enlargements
  • Laminar flow
  • Nozzles
  • Orifice plates
  • Single-phase flow
  • Valves
  • Viscous flow


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