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

K. S. Kulkarni; Richard J Goldstein

doi:10.1016/j.ijheatmasstransfer.2009.03.024

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

K. S. Kulkarni, Richard J Goldstein

Mechanical Engineering

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13 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 language	English (US)
Pages (from-to)	3994-4000
Number of pages	7
Journal	International Journal of Heat and Mass Transfer
Volume	52
Issue number	17-18
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2009.03.024
State	Published - Aug 2009

Keywords

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

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title = "Energy separation in the wake of a cylinder: Effect of Reynolds number and acoustic resonance",

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.",

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author = "Kulkarni, {K. S.} and Goldstein, {Richard J}",

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AU - Goldstein, Richard J

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AB - 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.

KW - Acoustic excitation

KW - Energy separation

KW - Flow reversal

KW - Low Mach number

KW - Wake of cylinder

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JO - International Journal of Heat and Mass Transfer

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ER -

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

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Keywords

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