Wake and vortex-sheddings from different diameter cylinders in tandem

L. J. Wang; Md Mahbub Alam; Y. Zhou

doi:10.1007/978-3-662-48868-3_67

Wake and vortex-sheddings from different diameter cylinders in tandem

L. J. Wang
, Md Mahbub Alam^*
, Y. Zhou

^*Corresponding author for this work

Harbin Institute of Technology Shenzhen

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The paper associated with two tandem cylinders presents the upstream cylinder size (diameter d) effect on global parameters of the downstream cylinder (diameter D) including time-mean and fluctuating drag (C_D, C_D^′), fluctuating lift (C_L^′), Strouhal number (St), and flow structures at spacing ratio L/d = 1.0–8.0, and diameter ratio d/D = 0.2–1.0, where L is the distance between the center of the upstream cylinder and the forward stagnation point of the downstream cylinder. The Reynolds number is kept constant at 4.27 × 10⁴ based on D. C_D, C_D^′ and C^′_L are measured using a sectional load cell, flow structures are obtained using a PIV technique. The critical L/d dividing the reattachment and coshedding flows is larger at smaller d/D. In the coshedding regime, the shedding frequency of the downstream cylinder locks-in with that of the upstream cylinder for d/D = 1.0, 0.8 and 0.6, in addition to a subharmonic lock-in for d/D = 0.6. The lock-in however does not occur at d/D = 0.4 and 0.2. C_D in general increases with d/D. C_D^′ and C^′_L both generally wane and grow as d/D decreases from 1.0 to 0.6 and 0.4 to 0.2, respectively.

Original language	English
Title of host publication	Fluid-Structure-Sound Interactions and Control - Proceedings of the 3rd Symposium on Fluid-Structure-Sound Interactions and Control
Editors	Yu Zhou, A.D. Lucey , Yang Liu, Lixi Huang
Publisher	Springer Heidelberg
Pages	421-427
Number of pages	7
ISBN (Print)	9783662488669
DOIs	https://doi.org/10.1007/978-3-662-48868-3_67
State	Published - 2016
Externally published	Yes
Event	3rd Symposium on Fluid-Structure-Sound Interactions and Control,FSSIC 2015 - Perth, Australia Duration: 5 Jul 2017 → 9 Jul 2017

Publication series

Name	Lecture Notes in Mechanical Engineering
ISSN (Print)	2195-4356
ISSN (Electronic)	2195-4364

Conference

Conference	3rd Symposium on Fluid-Structure-Sound Interactions and Control,FSSIC 2015
Country/Territory	Australia
City	Perth
Period	5/07/17 → 9/07/17

Keywords

Flow structures
Fluid forces
Strouhal number
Tandem cylinders

Access to Document

10.1007/978-3-662-48868-3_67

Cite this

Wang, L. J., Alam, M. M., & Zhou, Y. (2016). Wake and vortex-sheddings from different diameter cylinders in tandem. In Y. Zhou, A. D. Lucey , Y. Liu, & L. Huang (Eds.), Fluid-Structure-Sound Interactions and Control - Proceedings of the 3rd Symposium on Fluid-Structure-Sound Interactions and Control (pp. 421-427). (Lecture Notes in Mechanical Engineering). Springer Heidelberg. https://doi.org/10.1007/978-3-662-48868-3_67

Wang, L. J. ; Alam, Md Mahbub ; Zhou, Y. / Wake and vortex-sheddings from different diameter cylinders in tandem. Fluid-Structure-Sound Interactions and Control - Proceedings of the 3rd Symposium on Fluid-Structure-Sound Interactions and Control. editor / Yu Zhou ; A.D. Lucey ; Yang Liu ; Lixi Huang. Springer Heidelberg, 2016. pp. 421-427 (Lecture Notes in Mechanical Engineering).

@inproceedings{cbddc1a0a158430d9d0a9ddfedeea012,

title = "Wake and vortex-sheddings from different diameter cylinders in tandem",

abstract = "The paper associated with two tandem cylinders presents the upstream cylinder size (diameter d) effect on global parameters of the downstream cylinder (diameter D) including time-mean and fluctuating drag (CD, CD′), fluctuating lift (CL′), Strouhal number (St), and flow structures at spacing ratio L/d = 1.0–8.0, and diameter ratio d/D = 0.2–1.0, where L is the distance between the center of the upstream cylinder and the forward stagnation point of the downstream cylinder. The Reynolds number is kept constant at 4.27 × 104 based on D. CD, CD′ and C′L are measured using a sectional load cell, flow structures are obtained using a PIV technique. The critical L/d dividing the reattachment and coshedding flows is larger at smaller d/D. In the coshedding regime, the shedding frequency of the downstream cylinder locks-in with that of the upstream cylinder for d/D = 1.0, 0.8 and 0.6, in addition to a subharmonic lock-in for d/D = 0.6. The lock-in however does not occur at d/D = 0.4 and 0.2. CD in general increases with d/D. CD′ and C′L both generally wane and grow as d/D decreases from 1.0 to 0.6 and 0.4 to 0.2, respectively.",

keywords = "Flow structures, Fluid forces, Strouhal number, Tandem cylinders",

author = "Wang, \{L. J.\} and Alam, \{Md Mahbub\} and Y. Zhou",

note = "Publisher Copyright: {\textcopyright} Springer-Verlag Berlin Heidelberg 2016.; 3rd Symposium on Fluid-Structure-Sound Interactions and Control,FSSIC 2015 ; Conference date: 05-07-2017 Through 09-07-2017",

year = "2016",

doi = "10.1007/978-3-662-48868-3\_67",

language = "英语",

isbn = "9783662488669",

series = "Lecture Notes in Mechanical Engineering",

publisher = "Springer Heidelberg",

pages = "421--427",

editor = "Yu Zhou and \{Lucey \}, A.D. and Yang Liu and Lixi Huang",

booktitle = "Fluid-Structure-Sound Interactions and Control - Proceedings of the 3rd Symposium on Fluid-Structure-Sound Interactions and Control",

address = "德国",

}

Wang, LJ, Alam, MM & Zhou, Y 2016, Wake and vortex-sheddings from different diameter cylinders in tandem. in Y Zhou, AD Lucey , Y Liu & L Huang (eds), Fluid-Structure-Sound Interactions and Control - Proceedings of the 3rd Symposium on Fluid-Structure-Sound Interactions and Control. Lecture Notes in Mechanical Engineering, Springer Heidelberg, pp. 421-427, 3rd Symposium on Fluid-Structure-Sound Interactions and Control,FSSIC 2015, Perth, Australia, 5/07/17. https://doi.org/10.1007/978-3-662-48868-3_67

Wake and vortex-sheddings from different diameter cylinders in tandem. / Wang, L. J.; Alam, Md Mahbub; Zhou, Y.
Fluid-Structure-Sound Interactions and Control - Proceedings of the 3rd Symposium on Fluid-Structure-Sound Interactions and Control. ed. / Yu Zhou; A.D. Lucey ; Yang Liu; Lixi Huang. Springer Heidelberg, 2016. p. 421-427 (Lecture Notes in Mechanical Engineering).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Wake and vortex-sheddings from different diameter cylinders in tandem

AU - Wang, L. J.

AU - Alam, Md Mahbub

AU - Zhou, Y.

N1 - Publisher Copyright: © Springer-Verlag Berlin Heidelberg 2016.

PY - 2016

Y1 - 2016

N2 - The paper associated with two tandem cylinders presents the upstream cylinder size (diameter d) effect on global parameters of the downstream cylinder (diameter D) including time-mean and fluctuating drag (CD, CD′), fluctuating lift (CL′), Strouhal number (St), and flow structures at spacing ratio L/d = 1.0–8.0, and diameter ratio d/D = 0.2–1.0, where L is the distance between the center of the upstream cylinder and the forward stagnation point of the downstream cylinder. The Reynolds number is kept constant at 4.27 × 104 based on D. CD, CD′ and C′L are measured using a sectional load cell, flow structures are obtained using a PIV technique. The critical L/d dividing the reattachment and coshedding flows is larger at smaller d/D. In the coshedding regime, the shedding frequency of the downstream cylinder locks-in with that of the upstream cylinder for d/D = 1.0, 0.8 and 0.6, in addition to a subharmonic lock-in for d/D = 0.6. The lock-in however does not occur at d/D = 0.4 and 0.2. CD in general increases with d/D. CD′ and C′L both generally wane and grow as d/D decreases from 1.0 to 0.6 and 0.4 to 0.2, respectively.

AB - The paper associated with two tandem cylinders presents the upstream cylinder size (diameter d) effect on global parameters of the downstream cylinder (diameter D) including time-mean and fluctuating drag (CD, CD′), fluctuating lift (CL′), Strouhal number (St), and flow structures at spacing ratio L/d = 1.0–8.0, and diameter ratio d/D = 0.2–1.0, where L is the distance between the center of the upstream cylinder and the forward stagnation point of the downstream cylinder. The Reynolds number is kept constant at 4.27 × 104 based on D. CD, CD′ and C′L are measured using a sectional load cell, flow structures are obtained using a PIV technique. The critical L/d dividing the reattachment and coshedding flows is larger at smaller d/D. In the coshedding regime, the shedding frequency of the downstream cylinder locks-in with that of the upstream cylinder for d/D = 1.0, 0.8 and 0.6, in addition to a subharmonic lock-in for d/D = 0.6. The lock-in however does not occur at d/D = 0.4 and 0.2. CD in general increases with d/D. CD′ and C′L both generally wane and grow as d/D decreases from 1.0 to 0.6 and 0.4 to 0.2, respectively.

KW - Flow structures

KW - Fluid forces

KW - Strouhal number

KW - Tandem cylinders

UR - https://www.scopus.com/pages/publications/85019656023

U2 - 10.1007/978-3-662-48868-3_67

DO - 10.1007/978-3-662-48868-3_67

M3 - 会议稿件

AN - SCOPUS:85019656023

SN - 9783662488669

T3 - Lecture Notes in Mechanical Engineering

SP - 421

EP - 427

BT - Fluid-Structure-Sound Interactions and Control - Proceedings of the 3rd Symposium on Fluid-Structure-Sound Interactions and Control

A2 - Zhou, Yu

A2 - Lucey , A.D.

A2 - Liu, Yang

A2 - Huang, Lixi

PB - Springer Heidelberg

T2 - 3rd Symposium on Fluid-Structure-Sound Interactions and Control,FSSIC 2015

Y2 - 5 July 2017 through 9 July 2017

ER -

Wang LJ, Alam MM, Zhou Y. Wake and vortex-sheddings from different diameter cylinders in tandem. In Zhou Y, Lucey AD, Liu Y, Huang L, editors, Fluid-Structure-Sound Interactions and Control - Proceedings of the 3rd Symposium on Fluid-Structure-Sound Interactions and Control. Springer Heidelberg. 2016. p. 421-427. (Lecture Notes in Mechanical Engineering). doi: 10.1007/978-3-662-48868-3_67

Wake and vortex-sheddings from different diameter cylinders in tandem

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Keywords

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