Wake Interactions Around a Pair of Porous Cylinders in a Side-By-Side Arrangement in Channel Flow

Saqib Jamshed; Amit Dhiman

doi:10.1007/978-981-99-5752-1_29

Wake Interactions Around a Pair of Porous Cylinders in a Side-By-Side Arrangement in Channel Flow

Saqib Jamshed^*
, Amit Dhiman

^*Corresponding author for this work

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

3 Scopus citations

Abstract

In this study, we have investigated the flow around two side-by-side porous cylinders in a confined channel. The study reports various flow patterns as well as an absolute suppression of the vortex-shedding process at high permeability levels. An unsteady flow at Reynolds number Re = 150 at two different parameters, Darcy number (Da) and gap ratios (s/d) for the ranges of Da = 10^–6−10^–2 and s/d = 1.5–6, is found to exhibit asymmetric flip-flop and synchronized anti-phase wake patterns. A jet-like flow in the vicinity of cylinders, mainly on the gap side, controls the wake patterns. A jump in the flow characteristics in the intermediate range of Darcy number is also explained by means of backflow phenomena. The velocity profiles on the freestream sides, the gap side, and the surface pressure distribution curve are discussed to give insight into the formation and suppression of wakes. The effects of gap ratios and Darcy number on the drag coefficient are also examined.

Original language	English
Title of host publication	Fluid Mechanics and Fluid Power, Volume 2 - Select Proceedings of FMFP 2022
Editors	Krishna Mohan Singh, Sushanta Dutta, Sudhakar Subudhi, Nikhil Kumar Singh
Publisher	Springer Science and Business Media Deutschland GmbH
Pages	349-359
Number of pages	11
ISBN (Print)	9789819957514
DOIs	https://doi.org/10.1007/978-981-99-5752-1_29
State	Published - 2024
Externally published	Yes
Event	9th International and 49th National Conference on Fluid Mechanics and Fluid Power, FMFP 2022 - Roorkee, India Duration: 14 Dec 2022 → 16 Dec 2022

Publication series

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

Conference

Conference	9th International and 49th National Conference on Fluid Mechanics and Fluid Power, FMFP 2022
Country/Territory	India
City	Roorkee
Period	14/12/22 → 16/12/22

Bibliographical note

Publisher Copyright:
© 2024, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

Keywords

Darcy number
Gap ratio and wake patterns
Porous cylinders

ASJC Scopus subject areas

Automotive Engineering
Aerospace Engineering
Mechanical Engineering
Fluid Flow and Transfer Processes

Access to Document

10.1007/978-981-99-5752-1_29

Cite this

Jamshed, S., & Dhiman, A. (2024). Wake Interactions Around a Pair of Porous Cylinders in a Side-By-Side Arrangement in Channel Flow. In K. M. Singh, S. Dutta, S. Subudhi, & N. K. Singh (Eds.), Fluid Mechanics and Fluid Power, Volume 2 - Select Proceedings of FMFP 2022 (pp. 349-359). (Lecture Notes in Mechanical Engineering). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-981-99-5752-1_29

Jamshed, Saqib ; Dhiman, Amit. / Wake Interactions Around a Pair of Porous Cylinders in a Side-By-Side Arrangement in Channel Flow. Fluid Mechanics and Fluid Power, Volume 2 - Select Proceedings of FMFP 2022. editor / Krishna Mohan Singh ; Sushanta Dutta ; Sudhakar Subudhi ; Nikhil Kumar Singh. Springer Science and Business Media Deutschland GmbH, 2024. pp. 349-359 (Lecture Notes in Mechanical Engineering).

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abstract = "In this study, we have investigated the flow around two side-by-side porous cylinders in a confined channel. The study reports various flow patterns as well as an absolute suppression of the vortex-shedding process at high permeability levels. An unsteady flow at Reynolds number Re = 150 at two different parameters, Darcy number (Da) and gap ratios (s/d) for the ranges of Da = 10–6−10–2 and s/d = 1.5–6, is found to exhibit asymmetric flip-flop and synchronized anti-phase wake patterns. A jet-like flow in the vicinity of cylinders, mainly on the gap side, controls the wake patterns. A jump in the flow characteristics in the intermediate range of Darcy number is also explained by means of backflow phenomena. The velocity profiles on the freestream sides, the gap side, and the surface pressure distribution curve are discussed to give insight into the formation and suppression of wakes. The effects of gap ratios and Darcy number on the drag coefficient are also examined.",

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Jamshed, S & Dhiman, A 2024, Wake Interactions Around a Pair of Porous Cylinders in a Side-By-Side Arrangement in Channel Flow. in KM Singh, S Dutta, S Subudhi & NK Singh (eds), Fluid Mechanics and Fluid Power, Volume 2 - Select Proceedings of FMFP 2022. Lecture Notes in Mechanical Engineering, Springer Science and Business Media Deutschland GmbH, pp. 349-359, 9th International and 49th National Conference on Fluid Mechanics and Fluid Power, FMFP 2022, Roorkee, India, 14/12/22. https://doi.org/10.1007/978-981-99-5752-1_29

Wake Interactions Around a Pair of Porous Cylinders in a Side-By-Side Arrangement in Channel Flow. / Jamshed, Saqib; Dhiman, Amit.
Fluid Mechanics and Fluid Power, Volume 2 - Select Proceedings of FMFP 2022. ed. / Krishna Mohan Singh; Sushanta Dutta; Sudhakar Subudhi; Nikhil Kumar Singh. Springer Science and Business Media Deutschland GmbH, 2024. p. 349-359 (Lecture Notes in Mechanical Engineering).

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

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N2 - In this study, we have investigated the flow around two side-by-side porous cylinders in a confined channel. The study reports various flow patterns as well as an absolute suppression of the vortex-shedding process at high permeability levels. An unsteady flow at Reynolds number Re = 150 at two different parameters, Darcy number (Da) and gap ratios (s/d) for the ranges of Da = 10–6−10–2 and s/d = 1.5–6, is found to exhibit asymmetric flip-flop and synchronized anti-phase wake patterns. A jet-like flow in the vicinity of cylinders, mainly on the gap side, controls the wake patterns. A jump in the flow characteristics in the intermediate range of Darcy number is also explained by means of backflow phenomena. The velocity profiles on the freestream sides, the gap side, and the surface pressure distribution curve are discussed to give insight into the formation and suppression of wakes. The effects of gap ratios and Darcy number on the drag coefficient are also examined.

AB - In this study, we have investigated the flow around two side-by-side porous cylinders in a confined channel. The study reports various flow patterns as well as an absolute suppression of the vortex-shedding process at high permeability levels. An unsteady flow at Reynolds number Re = 150 at two different parameters, Darcy number (Da) and gap ratios (s/d) for the ranges of Da = 10–6−10–2 and s/d = 1.5–6, is found to exhibit asymmetric flip-flop and synchronized anti-phase wake patterns. A jet-like flow in the vicinity of cylinders, mainly on the gap side, controls the wake patterns. A jump in the flow characteristics in the intermediate range of Darcy number is also explained by means of backflow phenomena. The velocity profiles on the freestream sides, the gap side, and the surface pressure distribution curve are discussed to give insight into the formation and suppression of wakes. The effects of gap ratios and Darcy number on the drag coefficient are also examined.

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Jamshed S, Dhiman A. Wake Interactions Around a Pair of Porous Cylinders in a Side-By-Side Arrangement in Channel Flow. In Singh KM, Dutta S, Subudhi S, Singh NK, editors, Fluid Mechanics and Fluid Power, Volume 2 - Select Proceedings of FMFP 2022. Springer Science and Business Media Deutschland GmbH. 2024. p. 349-359. (Lecture Notes in Mechanical Engineering). doi: 10.1007/978-981-99-5752-1_29

Wake Interactions Around a Pair of Porous Cylinders in a Side-By-Side Arrangement in Channel Flow

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this