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The influence of hydrodynamic damping on the motion of an immersed elastic cantilever

Lorentzon, J. LU ; Revstedt, J. LU and Austrell, P.E. LU (2022) In European Journal of Mechanics B - Fluids 95.
Abstract
A fluid–structure interaction (FSI) technique is applied to study the influence of hydrodynamic damping on the motion of a cantilever in a still tank. The FSI is performed by a partitioned technique, using the deal.II and OpenFOAM open-source packages. An incompressible flow solver is applied for the fluid and a compressible solver for the structure. The motion of the structure is generated by applying a forced excitation over the coupled boundary creating hydrodynamic damping caused by the induced flow. The large deformation in the structure also makes the case suitable for benchmarking FSI. We perform an extensive parameter dependency study to investigate this application. As a result, we observe that the forced redirection flow varies... (More)
A fluid–structure interaction (FSI) technique is applied to study the influence of hydrodynamic damping on the motion of a cantilever in a still tank. The FSI is performed by a partitioned technique, using the deal.II and OpenFOAM open-source packages. An incompressible flow solver is applied for the fluid and a compressible solver for the structure. The motion of the structure is generated by applying a forced excitation over the coupled boundary creating hydrodynamic damping caused by the induced flow. The large deformation in the structure also makes the case suitable for benchmarking FSI. We perform an extensive parameter dependency study to investigate this application. As a result, we observe that the forced redirection flow varies strongly with mass ratio and magnitude of the force. We also study the difference between the structure in decaying motion and in resonance, triggered by applying traction that is either constant or varying sinusoidally over time. How the force is applied significantly affects the hydrodynamic damping. We have also verified a characteristic beating caused by the adherent swirls to the surface of the cantilever for sufficiently large deformations. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
FSI, Partitioned, Hydrodynamic, Damping
in
European Journal of Mechanics B - Fluids
volume
95
publisher
Elsevier Masson SAS
external identifiers
  • scopus:85129695965
ISSN
0997-7546
DOI
10.1016/j.euromechflu.2022.04.008
language
English
LU publication?
yes
id
0d8df3ba-f669-4133-a7a1-a610df372508
date added to LUP
2022-05-26 12:28:25
date last changed
2023-04-07 04:54:47
@article{0d8df3ba-f669-4133-a7a1-a610df372508,
  abstract     = {{A fluid–structure interaction (FSI) technique is applied to study the influence of hydrodynamic damping on the motion of a cantilever in a still tank. The FSI is performed by a partitioned technique, using the deal.II and OpenFOAM open-source packages. An incompressible flow solver is applied for the fluid and a compressible solver for the structure. The motion of the structure is generated by applying a forced excitation over the coupled boundary creating hydrodynamic damping caused by the induced flow. The large deformation in the structure also makes the case suitable for benchmarking FSI. We perform an extensive parameter dependency study to investigate this application. As a result, we observe that the forced redirection flow varies strongly with mass ratio and magnitude of the force. We also study the difference between the structure in decaying motion and in resonance, triggered by applying traction that is either constant or varying sinusoidally over time. How the force is applied significantly affects the hydrodynamic damping. We have also verified a characteristic beating caused by the adherent swirls to the surface of the cantilever for sufficiently large deformations.}},
  author       = {{Lorentzon, J. and Revstedt, J. and Austrell, P.E.}},
  issn         = {{0997-7546}},
  keywords     = {{FSI; Partitioned; Hydrodynamic; Damping}},
  language     = {{eng}},
  month        = {{04}},
  publisher    = {{Elsevier Masson SAS}},
  series       = {{European Journal of Mechanics B - Fluids}},
  title        = {{The influence of hydrodynamic damping on the motion of an immersed elastic cantilever}},
  url          = {{http://dx.doi.org/10.1016/j.euromechflu.2022.04.008}},
  doi          = {{10.1016/j.euromechflu.2022.04.008}},
  volume       = {{95}},
  year         = {{2022}},
}