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Influence of ice accretion on the noise generated by an airfoil section

Szasz, Robert Zoltan LU ; Ronnfors, Matilda LU and Revstedt, Johan LU (2016) In International Journal of Heat and Fluid Flow 62. p.83-92
Abstract

We investigate the noise generated by an airfoil section. Three cases are considered, one with a clean airfoil and two cases with airfoils with ice accretion. The amount of ice is the same in the two cases with ice accretion, but the surface of the accreted ice layer is smoother in one of them. The noise is computed using a hybrid approach. First the flow and the acoustic sources are computed. Second, the noise propagation is predicted by solving an inhomogeneous wave equation. The results indicate that in this case the accreted ice layer leads to a decrease of the radiated noise levels, especially in the lower frequency range.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Acoustics, Airfoil, CFD, Immersed boundary, LES, Wave equation
in
International Journal of Heat and Fluid Flow
volume
62
pages
10 pages
publisher
Elsevier
external identifiers
  • scopus:84979680754
  • wos:000391901800010
ISSN
0142-727X
DOI
10.1016/j.ijheatfluidflow.2016.06.006
language
English
LU publication?
yes
id
65d449f2-658a-4469-8e80-60c0fcb7875a
date added to LUP
2016-12-22 13:43:28
date last changed
2017-09-18 11:32:49
@article{65d449f2-658a-4469-8e80-60c0fcb7875a,
  abstract     = {<p>We investigate the noise generated by an airfoil section. Three cases are considered, one with a clean airfoil and two cases with airfoils with ice accretion. The amount of ice is the same in the two cases with ice accretion, but the surface of the accreted ice layer is smoother in one of them. The noise is computed using a hybrid approach. First the flow and the acoustic sources are computed. Second, the noise propagation is predicted by solving an inhomogeneous wave equation. The results indicate that in this case the accreted ice layer leads to a decrease of the radiated noise levels, especially in the lower frequency range.</p>},
  author       = {Szasz, Robert Zoltan and Ronnfors, Matilda and Revstedt, Johan},
  issn         = {0142-727X},
  keyword      = {Acoustics,Airfoil,CFD,Immersed boundary,LES,Wave equation},
  language     = {eng},
  month        = {12},
  pages        = {83--92},
  publisher    = {Elsevier},
  series       = {International Journal of Heat and Fluid Flow},
  title        = {Influence of ice accretion on the noise generated by an airfoil section},
  url          = {http://dx.doi.org/10.1016/j.ijheatfluidflow.2016.06.006},
  volume       = {62},
  year         = {2016},
}