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Passive load control in backward-facing step flow by using chevrons

Nilsson, Johan LU ; Szász, Robert-Zoltán LU ; Austrell, Per Erik LU and Gutmark, Ephraim J. (2016) The International Conference on Jets, Wakes and Separated Flows (ICJWSF2015) 185. p.223-239
Abstract
The ability of chevrons at the top edge of a backward-facing step to reduce downstream surface pressure fluctuations is investigated numerically. Three different chevron configurations are compared against a baseline case without chevrons. Low frequency reduction in the surface pressure fluctuations is observed for two of the configurations. The chevrons do not appear to have a significant effect on the flow as the mean reattachment length for all configurations is nearly constant and there is only a small increase in streamwise turbulence for one configuration with the other configurations unchanged.
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author
; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Serrations, Turbulence, Computational Fluid Dynamics, Backward-Facing Step, Acoustic Fatigue, Chevrons
host publication
Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows, ICJWSF 2015
volume
185
pages
8 pages
conference name
The International Conference on Jets, Wakes and Separated Flows (ICJWSF2015)
conference location
Stockholm, Sweden
conference dates
2015-06-16 - 2015-06-18
external identifiers
  • scopus:84979059398
  • wos:000387431400028
ISBN
9783319306001
DOI
10.1007/978-3-319-30602-5_28
language
English
LU publication?
yes
id
a9b9d80f-0f71-4adb-a88f-cd830da89832 (old id 7990126)
date added to LUP
2016-04-04 13:12:15
date last changed
2025-10-14 10:17:40
@inproceedings{a9b9d80f-0f71-4adb-a88f-cd830da89832,
  abstract     = {{The ability of chevrons at the top edge of a backward-facing step to reduce downstream surface pressure fluctuations is investigated numerically. Three different chevron configurations are compared against a baseline case without chevrons. Low frequency reduction in the surface pressure fluctuations is observed for two of the configurations. The chevrons do not appear to have a significant effect on the flow as the mean reattachment length for all configurations is nearly constant and there is only a small increase in streamwise turbulence for one configuration with the other configurations unchanged.}},
  author       = {{Nilsson, Johan and Szász, Robert-Zoltán and Austrell, Per Erik and Gutmark, Ephraim J.}},
  booktitle    = {{Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows, ICJWSF 2015}},
  isbn         = {{9783319306001}},
  keywords     = {{Serrations; Turbulence; Computational Fluid Dynamics; Backward-Facing Step; Acoustic Fatigue; Chevrons}},
  language     = {{eng}},
  pages        = {{223--239}},
  title        = {{Passive load control in backward-facing step flow by using chevrons}},
  url          = {{http://dx.doi.org/10.1007/978-3-319-30602-5_28}},
  doi          = {{10.1007/978-3-319-30602-5_28}},
  volume       = {{185}},
  year         = {{2016}},
}