Dynamic response of wall-mounted flaps in an oscillating crossflow

Joseph O’Connor; Alistair Revell

doi:10.1007/978-3-030-55594-8_39

Dynamic response of wall-mounted flaps in an oscillating crossflow

Joseph O’Connor^*, Alistair Revell

^*Corresponding author for this work

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

Abstract

The coupled interactions between fluids and slender structures play a number of critical roles in a broad range of physical processes. In flow control applications, poroelastic coatings consisting of arrays of passive slender structures have been shown to provide beneficial aerodynamic characteristics when applied to bluff bodies. This effect has been linked to the appearance of a travelling wave through the array which locks in to the shedding frequency of the wake. Through a simplified test case, which reduces the problem complexity while retaining the essential physics of the behaviour, the present work aims to further elucidate this phenomenon via numerical simulations. A range of array lengths are tested and the appearance and propagation of the travelling waves are monitored. The results show that for small arrays there exists one clearly defined wave, which is attributed to the advection of the primary bulk vortex over the array. However, for larger arrays, secondary vortices are generated at the tips which also induce a wave-like behaviour. These secondary vortices are smaller in size and intensity than the primary vortex and induce a smaller deflection in the flaps which dissipates quicker as it propagates though the array.

Original language	English
Title of host publication	Advances in critical flow dynamics involving moving/deformable structures with design applications
Subtitle of host publication	Proceedings of the IUTAM symposium on critical flow dynamics involving moving/deformable structures with design applications, June 18-22, 2018, Santorini, Greece
Editors	Marianna Braza, Kerry Hourigan, Michael Triantafyllou
Place of Publication	Cham, Switzerland
Publisher	Springer Nature
Pages	479-491
Number of pages	13
Volume	147
Edition	1
ISBN (Electronic)	9783030555948
ISBN (Print)	9783030555931, 9783030555962
DOIs	https://doi.org/10.1007/978-3-030-55594-8_39
Publication status	Published - 2021
Event	UTAM Symposium on Critical Flow Dynamics involving Moving/Deformable Structures with Design applications - Santorini, Greece Duration: 18 Jun 2018 → 22 Jun 2018

Publication series

Name	Notes on numerical fluid mechanics and multidisciplinary design
Volume	147
ISSN (Print)	1612-2909
ISSN (Electronic)	1860-0824

Conference

Conference	UTAM Symposium on Critical Flow Dynamics involving Moving/Deformable Structures with Design applications
Country/Territory	Greece
City	Santorini
Period	18/06/18 → 22/06/18

Keywords

Finite element method
Fluid-structure interaction
Immersed boundary method
Lattice Boltzmann method
Slender structures

Access to Document

10.1007/978-3-030-55594-8_39

Cite this

O’Connor, J., & Revell, A. (2021). Dynamic response of wall-mounted flaps in an oscillating crossflow. In M. Braza, K. Hourigan, & M. Triantafyllou (Eds.), Advances in critical flow dynamics involving moving/deformable structures with design applications: Proceedings of the IUTAM symposium on critical flow dynamics involving moving/deformable structures with design applications, June 18-22, 2018, Santorini, Greece (1 ed., Vol. 147, pp. 479-491). (Notes on numerical fluid mechanics and multidisciplinary design; Vol. 147). Springer Nature. https://doi.org/10.1007/978-3-030-55594-8_39

O’Connor, Joseph ; Revell, Alistair. / Dynamic response of wall-mounted flaps in an oscillating crossflow. Advances in critical flow dynamics involving moving/deformable structures with design applications: Proceedings of the IUTAM symposium on critical flow dynamics involving moving/deformable structures with design applications, June 18-22, 2018, Santorini, Greece. editor / Marianna Braza ; Kerry Hourigan ; Michael Triantafyllou. Vol. 147 1. ed. Cham, Switzerland : Springer Nature, 2021. pp. 479-491 (Notes on numerical fluid mechanics and multidisciplinary design).

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title = "Dynamic response of wall-mounted flaps in an oscillating crossflow",

abstract = "The coupled interactions between fluids and slender structures play a number of critical roles in a broad range of physical processes. In flow control applications, poroelastic coatings consisting of arrays of passive slender structures have been shown to provide beneficial aerodynamic characteristics when applied to bluff bodies. This effect has been linked to the appearance of a travelling wave through the array which locks in to the shedding frequency of the wake. Through a simplified test case, which reduces the problem complexity while retaining the essential physics of the behaviour, the present work aims to further elucidate this phenomenon via numerical simulations. A range of array lengths are tested and the appearance and propagation of the travelling waves are monitored. The results show that for small arrays there exists one clearly defined wave, which is attributed to the advection of the primary bulk vortex over the array. However, for larger arrays, secondary vortices are generated at the tips which also induce a wave-like behaviour. These secondary vortices are smaller in size and intensity than the primary vortex and induce a smaller deflection in the flaps which dissipates quicker as it propagates though the array.",

keywords = "Finite element method, Fluid-structure interaction, Immersed boundary method, Lattice Boltzmann method, Slender structures",

author = "Joseph O{\textquoteright}Connor and Alistair Revell",

note = "Funding Information: Acknowledgements The authors would like to acknowledge the use of the Computational Shared Facility at The University of Manchester and the ARCHER UK National Supercomputing Service. Support from the UK Engineering and Physical Sciences Research Council under the project {\textquoteleft}UK Consortium on Mesoscale Engineering Sciences (UKCOMES){\textquoteright} (Grant No. EP/L00030X/1) is gratefully acknowledged Funding Information: The authors would like to acknowledge the use of the Computational Shared Facility at The University of Manchester and the ARCHER UK National Supercomputing Service. Support from the UK Engineering and Physical Sciences Research Council under the project ?UK Consortium on Mesoscale Engineering Sciences (UKCOMES)? (Grant No. EP/L00030X/1) is gratefully acknowledged Publisher Copyright: {\textcopyright} 2021, Springer Nature Switzerland AG.; UTAM Symposium on Critical Flow Dynamics involving Moving/Deformable Structures with Design applications ; Conference date: 18-06-2018 Through 22-06-2018",

year = "2021",

doi = "10.1007/978-3-030-55594-8\_39",

language = "English",

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O’Connor, J & Revell, A 2021, Dynamic response of wall-mounted flaps in an oscillating crossflow. in M Braza, K Hourigan & M Triantafyllou (eds), Advances in critical flow dynamics involving moving/deformable structures with design applications: Proceedings of the IUTAM symposium on critical flow dynamics involving moving/deformable structures with design applications, June 18-22, 2018, Santorini, Greece. 1 edn, vol. 147, Notes on numerical fluid mechanics and multidisciplinary design, vol. 147, Springer Nature, Cham, Switzerland, pp. 479-491, UTAM Symposium on Critical Flow Dynamics involving Moving/Deformable Structures with Design applications, Santorini, Greece, 18/06/18. https://doi.org/10.1007/978-3-030-55594-8_39

Dynamic response of wall-mounted flaps in an oscillating crossflow. / O’Connor, Joseph; Revell, Alistair.
Advances in critical flow dynamics involving moving/deformable structures with design applications: Proceedings of the IUTAM symposium on critical flow dynamics involving moving/deformable structures with design applications, June 18-22, 2018, Santorini, Greece. ed. / Marianna Braza; Kerry Hourigan; Michael Triantafyllou. Vol. 147 1. ed. Cham, Switzerland: Springer Nature, 2021. p. 479-491 (Notes on numerical fluid mechanics and multidisciplinary design; Vol. 147).

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

TY - CHAP

T1 - Dynamic response of wall-mounted flaps in an oscillating crossflow

AU - O’Connor, Joseph

AU - Revell, Alistair

N1 - Funding Information: Acknowledgements The authors would like to acknowledge the use of the Computational Shared Facility at The University of Manchester and the ARCHER UK National Supercomputing Service. Support from the UK Engineering and Physical Sciences Research Council under the project ‘UK Consortium on Mesoscale Engineering Sciences (UKCOMES)’ (Grant No. EP/L00030X/1) is gratefully acknowledged Funding Information: The authors would like to acknowledge the use of the Computational Shared Facility at The University of Manchester and the ARCHER UK National Supercomputing Service. Support from the UK Engineering and Physical Sciences Research Council under the project ?UK Consortium on Mesoscale Engineering Sciences (UKCOMES)? (Grant No. EP/L00030X/1) is gratefully acknowledged Publisher Copyright: © 2021, Springer Nature Switzerland AG.

PY - 2021

Y1 - 2021

N2 - The coupled interactions between fluids and slender structures play a number of critical roles in a broad range of physical processes. In flow control applications, poroelastic coatings consisting of arrays of passive slender structures have been shown to provide beneficial aerodynamic characteristics when applied to bluff bodies. This effect has been linked to the appearance of a travelling wave through the array which locks in to the shedding frequency of the wake. Through a simplified test case, which reduces the problem complexity while retaining the essential physics of the behaviour, the present work aims to further elucidate this phenomenon via numerical simulations. A range of array lengths are tested and the appearance and propagation of the travelling waves are monitored. The results show that for small arrays there exists one clearly defined wave, which is attributed to the advection of the primary bulk vortex over the array. However, for larger arrays, secondary vortices are generated at the tips which also induce a wave-like behaviour. These secondary vortices are smaller in size and intensity than the primary vortex and induce a smaller deflection in the flaps which dissipates quicker as it propagates though the array.

AB - The coupled interactions between fluids and slender structures play a number of critical roles in a broad range of physical processes. In flow control applications, poroelastic coatings consisting of arrays of passive slender structures have been shown to provide beneficial aerodynamic characteristics when applied to bluff bodies. This effect has been linked to the appearance of a travelling wave through the array which locks in to the shedding frequency of the wake. Through a simplified test case, which reduces the problem complexity while retaining the essential physics of the behaviour, the present work aims to further elucidate this phenomenon via numerical simulations. A range of array lengths are tested and the appearance and propagation of the travelling waves are monitored. The results show that for small arrays there exists one clearly defined wave, which is attributed to the advection of the primary bulk vortex over the array. However, for larger arrays, secondary vortices are generated at the tips which also induce a wave-like behaviour. These secondary vortices are smaller in size and intensity than the primary vortex and induce a smaller deflection in the flaps which dissipates quicker as it propagates though the array.

KW - Finite element method

KW - Fluid-structure interaction

KW - Immersed boundary method

KW - Lattice Boltzmann method

KW - Slender structures

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DO - 10.1007/978-3-030-55594-8_39

M3 - Chapter

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SN - 9783030555931

SN - 9783030555962

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T3 - Notes on numerical fluid mechanics and multidisciplinary design

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BT - Advances in critical flow dynamics involving moving/deformable structures with design applications

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PB - Springer Nature

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O’Connor J, Revell A. Dynamic response of wall-mounted flaps in an oscillating crossflow. In Braza M, Hourigan K, Triantafyllou M, editors, Advances in critical flow dynamics involving moving/deformable structures with design applications: Proceedings of the IUTAM symposium on critical flow dynamics involving moving/deformable structures with design applications, June 18-22, 2018, Santorini, Greece. 1 ed. Vol. 147. Cham, Switzerland: Springer Nature. 2021. p. 479-491. (Notes on numerical fluid mechanics and multidisciplinary design). doi: 10.1007/978-3-030-55594-8_39

Dynamic response of wall-mounted flaps in an oscillating crossflow

Abstract

Publication series

Conference

Keywords

Access to Document

Other files and links

Fingerprint

M3LA: Multiphysics modelling by lattice Boltzmann methods

Cite this

Dynamic response of wall-mounted flaps in an oscillating crossflow

Abstract

Publication series

Conference

Keywords

Access to Document

Other files and links

Fingerprint

Projects

M3LA: Multiphysics modelling by lattice Boltzmann methods

Cite this