A Study on the Wake Regime Control and Drag Reduction Using Single Splitter Plate for a Flow Past a Semicircular Cylinder

S. M. Dash; S. D. Chavda; Kim Boon Lua

doi:10.1007/978-981-15-0124-1_11

A Study on the Wake Regime Control and Drag Reduction Using Single Splitter Plate for a Flow Past a Semicircular Cylinder

S. M. Dash^*, S. D. Chavda, Kim Boon Lua

^*Corresponding author for this work

Department of Mechanical Engineering

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

2 Scopus citations

Abstract

In this paper, a low Reynolds number flow (Re = 100) around the semicircular cylinder of diameter D with and without splitter plate is numerically investigated using in-house developed flexible forcing IB—LBM scheme. The length of the splitter plate is systematically varied from 0.5D to 4.0D to investigate its effect on the flow structure and on the vortex-induced forces. The recirculation region behind the semicircular cylinder is increased with an increase in the length of the splitter plate, and as a consequence the base pressure is recovered, and the time-averaged drag coefficient is reduced. Complete suppression of the fluctuating lift coefficient and von Karman vortex shedding is noticed for a splitter plate of length 4.0D for which a maximum drag reduction of around 32% is found. The wake regime as a function of splitter plate length is thoroughly analysed.

Original language	English
Title of host publication	Advances in Mechanical Engineering - Select Proceedings of ICRIDME 2018
Editors	B.B. Biswal, Bikash Kumar Sarkar, P. Mahanta
Publisher	Springer
Pages	97-105
Number of pages	9
ISBN (Electronic)	9789811501241
ISBN (Print)	9789811501234
DOIs	https://doi.org/10.1007/978-981-15-0124-1_11
State	Published - 8 Nov 2020
Event	International Conference on Recent Innovations and Developments in Mechanical Engineering, IC-RIDME 2018 - Shillong, India Duration: 8 Nov 2018 → 10 Nov 2018

Publication series

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

Conference

Conference	International Conference on Recent Innovations and Developments in Mechanical Engineering, IC-RIDME 2018
Country/Territory	India
City	Shillong
Period	8/11/18 → 10/11/18

Keywords

Drag reduction
Flow separation control
Semicircular cylinder
Single splitter plate

Access to Document

10.1007/978-981-15-0124-1_11

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Dash, S. M., Chavda, S. D., & Lua, K. B. (2020). A Study on the Wake Regime Control and Drag Reduction Using Single Splitter Plate for a Flow Past a Semicircular Cylinder. In B. B. Biswal, B. K. Sarkar, & P. Mahanta (Eds.), Advances in Mechanical Engineering - Select Proceedings of ICRIDME 2018 (pp. 97-105). (Lecture Notes in Mechanical Engineering). Springer. https://doi.org/10.1007/978-981-15-0124-1_11

Dash, S. M. ; Chavda, S. D. ; Lua, Kim Boon. / A Study on the Wake Regime Control and Drag Reduction Using Single Splitter Plate for a Flow Past a Semicircular Cylinder. Advances in Mechanical Engineering - Select Proceedings of ICRIDME 2018. editor / B.B. Biswal ; Bikash Kumar Sarkar ; P. Mahanta. Springer, 2020. pp. 97-105 (Lecture Notes in Mechanical Engineering).

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title = "A Study on the Wake Regime Control and Drag Reduction Using Single Splitter Plate for a Flow Past a Semicircular Cylinder",

abstract = "In this paper, a low Reynolds number flow (Re = 100) around the semicircular cylinder of diameter D with and without splitter plate is numerically investigated using in-house developed flexible forcing IB—LBM scheme. The length of the splitter plate is systematically varied from 0.5D to 4.0D to investigate its effect on the flow structure and on the vortex-induced forces. The recirculation region behind the semicircular cylinder is increased with an increase in the length of the splitter plate, and as a consequence the base pressure is recovered, and the time-averaged drag coefficient is reduced. Complete suppression of the fluctuating lift coefficient and von Karman vortex shedding is noticed for a splitter plate of length 4.0D for which a maximum drag reduction of around 32% is found. The wake regime as a function of splitter plate length is thoroughly analysed.",

keywords = "Drag reduction, Flow separation control, Semicircular cylinder, Single splitter plate",

author = "Dash, {S. M.} and Chavda, {S. D.} and Lua, {Kim Boon}",

note = "Publisher Copyright: {\textcopyright} 2020, Springer Nature Singapore Pte Ltd.; International Conference on Recent Innovations and Developments in Mechanical Engineering, IC-RIDME 2018 ; Conference date: 08-11-2018 Through 10-11-2018",

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Dash, SM, Chavda, SD & Lua, KB 2020, A Study on the Wake Regime Control and Drag Reduction Using Single Splitter Plate for a Flow Past a Semicircular Cylinder. in BB Biswal, BK Sarkar & P Mahanta (eds), Advances in Mechanical Engineering - Select Proceedings of ICRIDME 2018. Lecture Notes in Mechanical Engineering, Springer, pp. 97-105, International Conference on Recent Innovations and Developments in Mechanical Engineering, IC-RIDME 2018, Shillong, India, 8/11/18. https://doi.org/10.1007/978-981-15-0124-1_11

A Study on the Wake Regime Control and Drag Reduction Using Single Splitter Plate for a Flow Past a Semicircular Cylinder. / Dash, S. M.; Chavda, S. D.; Lua, Kim Boon.
Advances in Mechanical Engineering - Select Proceedings of ICRIDME 2018. ed. / B.B. Biswal; Bikash Kumar Sarkar; P. Mahanta. Springer, 2020. p. 97-105 (Lecture Notes in Mechanical Engineering).

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

TY - GEN

T1 - A Study on the Wake Regime Control and Drag Reduction Using Single Splitter Plate for a Flow Past a Semicircular Cylinder

AU - Dash, S. M.

AU - Chavda, S. D.

AU - Lua, Kim Boon

PY - 2020/11/8

Y1 - 2020/11/8

N2 - In this paper, a low Reynolds number flow (Re = 100) around the semicircular cylinder of diameter D with and without splitter plate is numerically investigated using in-house developed flexible forcing IB—LBM scheme. The length of the splitter plate is systematically varied from 0.5D to 4.0D to investigate its effect on the flow structure and on the vortex-induced forces. The recirculation region behind the semicircular cylinder is increased with an increase in the length of the splitter plate, and as a consequence the base pressure is recovered, and the time-averaged drag coefficient is reduced. Complete suppression of the fluctuating lift coefficient and von Karman vortex shedding is noticed for a splitter plate of length 4.0D for which a maximum drag reduction of around 32% is found. The wake regime as a function of splitter plate length is thoroughly analysed.

AB - In this paper, a low Reynolds number flow (Re = 100) around the semicircular cylinder of diameter D with and without splitter plate is numerically investigated using in-house developed flexible forcing IB—LBM scheme. The length of the splitter plate is systematically varied from 0.5D to 4.0D to investigate its effect on the flow structure and on the vortex-induced forces. The recirculation region behind the semicircular cylinder is increased with an increase in the length of the splitter plate, and as a consequence the base pressure is recovered, and the time-averaged drag coefficient is reduced. Complete suppression of the fluctuating lift coefficient and von Karman vortex shedding is noticed for a splitter plate of length 4.0D for which a maximum drag reduction of around 32% is found. The wake regime as a function of splitter plate length is thoroughly analysed.

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KW - Flow separation control

KW - Semicircular cylinder

KW - Single splitter plate

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BT - Advances in Mechanical Engineering - Select Proceedings of ICRIDME 2018

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T2 - International Conference on Recent Innovations and Developments in Mechanical Engineering, IC-RIDME 2018

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ER -

Dash SM, Chavda SD, Lua KB. A Study on the Wake Regime Control and Drag Reduction Using Single Splitter Plate for a Flow Past a Semicircular Cylinder. In Biswal BB, Sarkar BK, Mahanta P, editors, Advances in Mechanical Engineering - Select Proceedings of ICRIDME 2018. Springer. 2020. p. 97-105. (Lecture Notes in Mechanical Engineering). doi: 10.1007/978-981-15-0124-1_11

A Study on the Wake Regime Control and Drag Reduction Using Single Splitter Plate for a Flow Past a Semicircular Cylinder

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