The pressure-velocity correlation in oscillatory turbulent flow between a pair of bluff bodies

Shinnosuke Obi; Norihiko Tokai

doi:10.1016/j.ijheatfluidflow.2006.03.021

The pressure-velocity correlation in oscillatory turbulent flow between a pair of bluff bodies

Shinnosuke Obi, Norihiko Tokai

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Turbulent flow measurements were conducted between two bluff bodies set in uniform flow in tandem arrangement. The velocity field obtained with PIV was averaged with respect to either time or phase of periodic pressure oscillation induced by vortex shedding from the bluff body, i.e., Reynolds decomposition or three-level decomposition. The Reynolds stresses caused by periodic fluid motion was found excessively large compared with those related to turbulent fluctuations in the entire flow field in observation. The PIV data were used to solve the discrete Poisson equation of instantaneous pressure. The effect of organized vortex motion caused strong correlations between velocity and pressure gradient when observed from the framework of the Reynolds averaging.

Original language	English
Pages (from-to)	768-776
Number of pages	9
Journal	International Journal of Heat and Fluid Flow
Volume	27
Issue number	5
DOIs	https://doi.org/10.1016/j.ijheatfluidflow.2006.03.021
Publication status	Published - 2006 Oct

Keywords

PIV
Pressure-velocity correlation
Reynolds stress
Three-level decomposition
Turbulent wake
URANS

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1016/j.ijheatfluidflow.2006.03.021

Cite this

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title = "The pressure-velocity correlation in oscillatory turbulent flow between a pair of bluff bodies",

abstract = "Turbulent flow measurements were conducted between two bluff bodies set in uniform flow in tandem arrangement. The velocity field obtained with PIV was averaged with respect to either time or phase of periodic pressure oscillation induced by vortex shedding from the bluff body, i.e., Reynolds decomposition or three-level decomposition. The Reynolds stresses caused by periodic fluid motion was found excessively large compared with those related to turbulent fluctuations in the entire flow field in observation. The PIV data were used to solve the discrete Poisson equation of instantaneous pressure. The effect of organized vortex motion caused strong correlations between velocity and pressure gradient when observed from the framework of the Reynolds averaging.",

keywords = "PIV, Pressure-velocity correlation, Reynolds stress, Three-level decomposition, Turbulent wake, URANS",

author = "Shinnosuke Obi and Norihiko Tokai",

note = "Funding Information: The authors are grateful to Prof. S. Masuda, Keio University, and Dr. S. Kuroda, IHI, for invaluable discussions. The financial support for the present work has been provided by the Ministry of Education, Science, Sports and Culture, through Grant-in-Aid for Scientific Research (B), 15360100, 2004.",

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doi = "10.1016/j.ijheatfluidflow.2006.03.021",

language = "English",

volume = "27",

pages = "768--776",

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AU - Obi, Shinnosuke

AU - Tokai, Norihiko

N1 - Funding Information: The authors are grateful to Prof. S. Masuda, Keio University, and Dr. S. Kuroda, IHI, for invaluable discussions. The financial support for the present work has been provided by the Ministry of Education, Science, Sports and Culture, through Grant-in-Aid for Scientific Research (B), 15360100, 2004.

PY - 2006/10

Y1 - 2006/10

N2 - Turbulent flow measurements were conducted between two bluff bodies set in uniform flow in tandem arrangement. The velocity field obtained with PIV was averaged with respect to either time or phase of periodic pressure oscillation induced by vortex shedding from the bluff body, i.e., Reynolds decomposition or three-level decomposition. The Reynolds stresses caused by periodic fluid motion was found excessively large compared with those related to turbulent fluctuations in the entire flow field in observation. The PIV data were used to solve the discrete Poisson equation of instantaneous pressure. The effect of organized vortex motion caused strong correlations between velocity and pressure gradient when observed from the framework of the Reynolds averaging.

AB - Turbulent flow measurements were conducted between two bluff bodies set in uniform flow in tandem arrangement. The velocity field obtained with PIV was averaged with respect to either time or phase of periodic pressure oscillation induced by vortex shedding from the bluff body, i.e., Reynolds decomposition or three-level decomposition. The Reynolds stresses caused by periodic fluid motion was found excessively large compared with those related to turbulent fluctuations in the entire flow field in observation. The PIV data were used to solve the discrete Poisson equation of instantaneous pressure. The effect of organized vortex motion caused strong correlations between velocity and pressure gradient when observed from the framework of the Reynolds averaging.

KW - PIV

KW - Pressure-velocity correlation

KW - Reynolds stress

KW - Three-level decomposition

KW - Turbulent wake

KW - URANS

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DO - 10.1016/j.ijheatfluidflow.2006.03.021

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EP - 776

JO - Heat Fluid Flow

JF - Heat Fluid Flow

SN - 0142-727X

IS - 5

ER -

The pressure-velocity correlation in oscillatory turbulent flow between a pair of bluff bodies

Abstract

Keywords

ASJC Scopus subject areas

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