Effects of pulsation on the flow field of turbulent impinging jets

H. Medina, E. Benard, J. M. Early

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Abstract

The current study examines the effect of pulsation on the flow field of turbulent impinging jets. Previous work identified significant differences in the transitional and turbulent jet responses to pulsation, and this study considers the effect of the Strouhal number on the structure of turbulent impinging jets. This is of particular interest due to the wide-spread use of jets (for instance, in heat and mass transfer applications), and there is an interest in the utilisation of pulsating jets as alternative to steady jets to increase heat and mass transfer rates. Preliminary findings suggest that in order to achieve improvements in heat and mass transfer rates, a turbulent jet is preferable to an equivalent transitional jet as their behaviour is easier to predict, and for a number of frequencies, they exhibit favourable flow conditions when compared to the equivalent steady jet case. The similariry in the observed turbulence characteristics between the steady and pulsating cases also suggests that a steady jet model could be a viable baseline for computational modelling of a turbulent pulsating jet.

Original languageEnglish
Title of host publication39th AIAA Fluid Dynamics Conference
DOIs
Publication statusPublished - 2009
Event39th AIAA Fluid Dynamics Conference - San Antonio, United States
Duration: 22 Jun 200925 Jun 2009

Conference

Conference39th AIAA Fluid Dynamics Conference
CountryUnited States
CitySan Antonio
Period22/06/0925/06/09

Keywords

  • Computational modelling
  • Flow condition
  • Heat and mass transfer
  • Pulsating jets
  • Steady jet
  • Turbulence characteristics
  • Turbulent impinging jet
  • Turbulent jet

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Aerospace Engineering

Fingerprint Dive into the research topics of 'Effects of pulsation on the flow field of turbulent impinging jets'. Together they form a unique fingerprint.

  • Cite this

    Medina, H., Benard, E., & Early, J. M. (2009). Effects of pulsation on the flow field of turbulent impinging jets. In 39th AIAA Fluid Dynamics Conference [2009-4006] https://doi.org/10.2514/6.2009-4006