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Flow-induced motion of a short circular cylinder spanning a rectangular channel

Lazarkov, Mikhail LU and Revstedt, Johan LU (2008) In Journal of Fluids and Structures 24(4). p.449-466
Abstract (Swedish)
Abstract in Undetermined

Flow-induced oscillation of an elastically supported circular cylinder subject to an incompressible fluid at Re=100 and 400 has been studied using three-dimensional simulations. The cylinder is either subjected to a uniform flow in an unconfined surrounding or confined by rectangular channel, i.e. the cylinder is confined in both the span-wise and the cross-stream directions. The cylinder surface is represented by a virtual boundary method which replaces a solid object in flow by additional force distribution to satisfy local boundary condition. The simulations have been performed for nondamped cylinder with low mass ratio. For the unconfined cylinder, the effects of Reynolds number are studied. The... (More)
Abstract in Undetermined

Flow-induced oscillation of an elastically supported circular cylinder subject to an incompressible fluid at Re=100 and 400 has been studied using three-dimensional simulations. The cylinder is either subjected to a uniform flow in an unconfined surrounding or confined by rectangular channel, i.e. the cylinder is confined in both the span-wise and the cross-stream directions. The cylinder surface is represented by a virtual boundary method which replaces a solid object in flow by additional force distribution to satisfy local boundary condition. The simulations have been performed for nondamped cylinder with low mass ratio. For the unconfined cylinder, the effects of Reynolds number are studied. The effects of confinement have been investigated by varying the extent of the channel (and thereby also the cylinder length) in the span-wise direction. The maximal amplitude is found to be decreased by the confinement. For very strong confinement (short cylinder) the motion of the cylinder is governed by the natural frequency of the structure even beyond synchronisation range. The upper boundary of the synchronisation range exhibits no dependency on the confinement, only on Reynolds number. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Cartesian grid, Virtual boundary method, Flow-induced motion, Moving boundaries
in
Journal of Fluids and Structures
volume
24
issue
4
pages
449 - 466
publisher
Elsevier
external identifiers
  • wos:000256808300001
  • scopus:43649108579
ISSN
1095-8622
DOI
10.1016/j.jfluidstructs.2007.10.003
language
English
LU publication?
yes
id
4ecc7bd2-87c4-495e-b97a-8c5568aecef2 (old id 571939)
date added to LUP
2008-02-26 09:17:35
date last changed
2017-01-01 07:35:11
@article{4ecc7bd2-87c4-495e-b97a-8c5568aecef2,
  abstract     = {<b>Abstract in Undetermined</b><br/><br>
Flow-induced oscillation of an elastically supported circular cylinder subject to an incompressible fluid at Re=100 and 400 has been studied using three-dimensional simulations. The cylinder is either subjected to a uniform flow in an unconfined surrounding or confined by rectangular channel, i.e. the cylinder is confined in both the span-wise and the cross-stream directions. The cylinder surface is represented by a virtual boundary method which replaces a solid object in flow by additional force distribution to satisfy local boundary condition. The simulations have been performed for nondamped cylinder with low mass ratio. For the unconfined cylinder, the effects of Reynolds number are studied. The effects of confinement have been investigated by varying the extent of the channel (and thereby also the cylinder length) in the span-wise direction. The maximal amplitude is found to be decreased by the confinement. For very strong confinement (short cylinder) the motion of the cylinder is governed by the natural frequency of the structure even beyond synchronisation range. The upper boundary of the synchronisation range exhibits no dependency on the confinement, only on Reynolds number.},
  author       = {Lazarkov, Mikhail and Revstedt, Johan},
  issn         = {1095-8622},
  keyword      = {Cartesian grid,Virtual boundary method,Flow-induced motion,Moving boundaries},
  language     = {eng},
  number       = {4},
  pages        = {449--466},
  publisher    = {Elsevier},
  series       = {Journal of Fluids and Structures},
  title        = {Flow-induced motion of a short circular cylinder spanning a rectangular channel},
  url          = {http://dx.doi.org/10.1016/j.jfluidstructs.2007.10.003},
  volume       = {24},
  year         = {2008},
}