Advanced

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.
Please use this url to cite or link to this publication:
author
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
2015-09-24 11:04:16
date last changed
2019-09-17 03:59:19
@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.},
  isbn         = {9783319306001},
  keyword      = {Serrations,Turbulence,Computational Fluid Dynamics,Backward-Facing Step,Acoustic Fatigue,Chevrons},
  language     = {eng},
  location     = {Stockholm, Sweden},
  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},
  volume       = {185},
  year         = {2016},
}