Energy separation in the wake of a cylinder: Effect of Reynolds number and acoustic resonance

K. S. Kulkarni, Richard J Goldstein

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Energy separation is a spontaneous redistribution of total energy in a flowing fluid without external work or heat transfer. The energy separation mechanism in the vortex field behind an adiabatic circular cylinder in a cross flow of air is investigated. Time-averaged velocity and temperature measurements taken one diameter downstream of the cylinder (Re ∼ 105, M ∼ 0.25) indicate flow reversal. The measured recovery temperature, expressed as distribution of energy separation factor indicates that energy separation is caused by the vortex flow in the wake, enhanced by acoustic excitation, and is insensitive to Reynolds number in the sub critical range studied.

Original languageEnglish (US)
Pages (from-to)3994-4000
Number of pages7
JournalInternational Journal of Heat and Mass Transfer
Volume52
Issue number17-18
DOIs
StatePublished - Aug 1 2009

Keywords

  • Acoustic excitation
  • Energy separation
  • Flow reversal
  • Low Mach number
  • Wake of cylinder

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