Forced convection from a rotationally oscillating cylinder placed in a uniform stream

F. M. Mahfouz; H. M. Badr

doi:10.1016/S0017-9310(99)00326-9

Forced convection from a rotationally oscillating cylinder placed in a uniform stream

F. M. Mahfouz
, H. M. Badr^*

^*Corresponding author for this work

King Fahd University of Petroleum & Minerals

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

59 Scopus citations

Abstract

Forced convection from a heated cylinder performing rotational oscillation about its own axis and placed in a uniform stream is investigated. The governing equations of motion and energy are solved numerically to determine the flow field characteristics and the heat transfer coefficients. The main dominating parameters are Reynolds numbers, Re, Prandtl number, Pr, amplitude of oscillation, Θ(A), and the frequency ratio, F(R), which represents the ratio between the frequency of oscillation, f, and the natural frequency of vortex shedding, f₀. The ranges considered for these parameters are 40 ≤Re≤200, 0≤Θ(A) ≤π and 0 ≤F(R)≤2, while the Prandtl number is kept constant at 0.7. The lock-on phenomenon has been detected and its effect on the thermal field has been determined. The results show that the lock-on phenomenon occurs within a band of frequency near the natural frequency and the heat transfer coefficient has shown appreciable increase in the lock-on frequency range. (C) 2000 Elsevier Science Ltd. All rights reserved.

Original language	English
Pages (from-to)	3093-3104
Number of pages	12
Journal	International Journal of Heat and Mass Transfer
Volume	43
Issue number	17
DOIs	https://doi.org/10.1016/S0017-9310(99)00326-9
State	Published - 1 Sep 2000

Bibliographical note

Funding Information:
The authors wish to acknowledge the support received from King Fahd University of Petroleum and Minerals during this study. They also wish to thank the reviewers for their valuable comments that were instrumental in improving the manuscript.

Keywords

Convection
Cylinder
Lock-on
Oscillations
Rotation
Vortex shedding

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1016/S0017-9310(99)00326-9

Cite this

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title = "Forced convection from a rotationally oscillating cylinder placed in a uniform stream",

abstract = "Forced convection from a heated cylinder performing rotational oscillation about its own axis and placed in a uniform stream is investigated. The governing equations of motion and energy are solved numerically to determine the flow field characteristics and the heat transfer coefficients. The main dominating parameters are Reynolds numbers, Re, Prandtl number, Pr, amplitude of oscillation, Θ(A), and the frequency ratio, F(R), which represents the ratio between the frequency of oscillation, f, and the natural frequency of vortex shedding, f0. The ranges considered for these parameters are 40 ≤Re≤200, 0≤Θ(A) ≤π and 0 ≤F(R)≤2, while the Prandtl number is kept constant at 0.7. The lock-on phenomenon has been detected and its effect on the thermal field has been determined. The results show that the lock-on phenomenon occurs within a band of frequency near the natural frequency and the heat transfer coefficient has shown appreciable increase in the lock-on frequency range. (C) 2000 Elsevier Science Ltd. All rights reserved.",

keywords = "Convection, Cylinder, Lock-on, Oscillations, Rotation, Vortex shedding",

author = "Mahfouz, \{F. M.\} and Badr, \{H. M.\}",

note = "Funding Information: The authors wish to acknowledge the support received from King Fahd University of Petroleum and Minerals during this study. They also wish to thank the reviewers for their valuable comments that were instrumental in improving the manuscript. ",

year = "2000",

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day = "1",

doi = "10.1016/S0017-9310(99)00326-9",

language = "English",

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T1 - Forced convection from a rotationally oscillating cylinder placed in a uniform stream

AU - Mahfouz, F. M.

AU - Badr, H. M.

N1 - Funding Information: The authors wish to acknowledge the support received from King Fahd University of Petroleum and Minerals during this study. They also wish to thank the reviewers for their valuable comments that were instrumental in improving the manuscript.

PY - 2000/9/1

Y1 - 2000/9/1

N2 - Forced convection from a heated cylinder performing rotational oscillation about its own axis and placed in a uniform stream is investigated. The governing equations of motion and energy are solved numerically to determine the flow field characteristics and the heat transfer coefficients. The main dominating parameters are Reynolds numbers, Re, Prandtl number, Pr, amplitude of oscillation, Θ(A), and the frequency ratio, F(R), which represents the ratio between the frequency of oscillation, f, and the natural frequency of vortex shedding, f0. The ranges considered for these parameters are 40 ≤Re≤200, 0≤Θ(A) ≤π and 0 ≤F(R)≤2, while the Prandtl number is kept constant at 0.7. The lock-on phenomenon has been detected and its effect on the thermal field has been determined. The results show that the lock-on phenomenon occurs within a band of frequency near the natural frequency and the heat transfer coefficient has shown appreciable increase in the lock-on frequency range. (C) 2000 Elsevier Science Ltd. All rights reserved.

AB - Forced convection from a heated cylinder performing rotational oscillation about its own axis and placed in a uniform stream is investigated. The governing equations of motion and energy are solved numerically to determine the flow field characteristics and the heat transfer coefficients. The main dominating parameters are Reynolds numbers, Re, Prandtl number, Pr, amplitude of oscillation, Θ(A), and the frequency ratio, F(R), which represents the ratio between the frequency of oscillation, f, and the natural frequency of vortex shedding, f0. The ranges considered for these parameters are 40 ≤Re≤200, 0≤Θ(A) ≤π and 0 ≤F(R)≤2, while the Prandtl number is kept constant at 0.7. The lock-on phenomenon has been detected and its effect on the thermal field has been determined. The results show that the lock-on phenomenon occurs within a band of frequency near the natural frequency and the heat transfer coefficient has shown appreciable increase in the lock-on frequency range. (C) 2000 Elsevier Science Ltd. All rights reserved.

KW - Convection

KW - Cylinder

KW - Lock-on

KW - Oscillations

KW - Rotation

KW - Vortex shedding

UR - https://www.scopus.com/pages/publications/0034119336

U2 - 10.1016/S0017-9310(99)00326-9

DO - 10.1016/S0017-9310(99)00326-9

M3 - Article

AN - SCOPUS:0034119336

SN - 0017-9310

VL - 43

SP - 3093

EP - 3104

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

IS - 17

ER -

Forced convection from a rotationally oscillating cylinder placed in a uniform stream

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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