Velocity-pressure correlation measurements in complex free shear flows

Yoshitsugu Naka, Shinnosuke Obi

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Simultaneous measurements of fluctuating velocity and pressure were performed in various turbulent free shear flows including a turbulent mixing layer and the wing-tip vortex trailing from a NACA0012 half-wing. Two different methods for fluctuating static pressure measurement were considered: a direct method using a miniature Pitot tube and an indirect method where static pressure was calculated from total pressure. The pressure obtained by either of these methods was correlated with the velocity measured by an X-type hot-wire probe. The results from these two techniques agreed with each other in the turbulent mixing layer. In the wing-tip vortex case, however, some discrepancies were found, although overall characteristics of the pressure-related statistics were adequately captured by both methods.

Original languageEnglish
Pages (from-to)411-420
Number of pages10
JournalInternational Journal of Heat and Fluid Flow
Volume30
Issue number3
DOIs
Publication statusPublished - 2009 Jun 1

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Keywords

  • Complex free shear flows
  • Measurement technique
  • Velocity-pressure correlation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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