Pressure drop across vortex diodes: Experiments and design guidelines

Amol A. Kulkarni, Vivek V. Ranade*, R. Rajeev, S. B. Koganti

*Corresponding author for this work

Research output: Contribution to journalArticle

33 Citations (Scopus)


Vortex diodes are used as leaky non-return valves in applications where it is desirable to avoid valves with moving parts. Despite their use in practice for several decades, no clear guidelines for design and optimization of vortex diodes are available. Detailed experimental study on flow and pressure drop characteristics of vortex diodes was therefore carried out to evolve such guidelines. The study covered a wide range of vortex diodes. The variation of diodicity (ratio of pressure drop for reverse and forward flow for the same flow rate) with respect to diode geometry, diode size (dC), aspect ratio (dC/h), nozzle configuration and Reynolds number (Re) was studied. The experimental results were critically analyzed to develop a design methodology. The methodology is shown to be useful for obtaining the diode dimensions that would yield the desired diodicity for the required operating flow rate.

Original languageEnglish
Pages (from-to)1285-1292
Number of pages8
JournalChemical Engineering Science
Issue number6
Publication statusPublished - 16 Mar 2009
Externally publishedYes


  • Aspect ratio
  • Diodicity
  • Nozzles
  • Pressure drop
  • Vortex diode

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Applied Mathematics
  • Industrial and Manufacturing Engineering

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