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An airborne acoustic method to reconstruct a dynamically rough flow surface

Anton Krynkin, Kirill V Horoshenkov and Timothy Van Renterghem UGent (2016) JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA. 140(3). p.2064-2073
abstract
Currently, there is no airborne in situ method to reconstruct with high fidelity the instantaneous elevation of a dynamically rough surface of a turbulent flow. This work proposes a holographic method that reconstructs the elevation of a one-dimensional rough water surface from airborne acoustic pressure data. This method can be implemented practically using an array of microphones deployed over a dynamically rough surface or using a single microphone which is traversed above the surface at a speed that is much higher than the phase velocity of the roughness pattern. In this work, the theory is validated using synthetic data calculated with the Kirchhoff approximation and a finite difference time domain method over a number of measured surface roughness patterns. The proposed method is able to reconstruct the surface elevation with a sub-millimeter accuracy and over a representatively large area of the surface. Since it has been previously shown that the surface roughness pattern reflects accurately the underlying hydraulic processes in open channel flow [e.g., Horoshenkov, Nichols, Tait, and Maximov, J. Geophys. Res. 118(3), 1864-1876 (2013)], the proposed method paves the way for the development of non-invasive instrumentation for flow mapping and characterization that are based on the acoustic holography principle. (C) 2016 Acoustical Society of America.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
keyword
SCATTERING
journal title
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
J. Acoust. Soc. Am.
volume
140
issue
3
pages
10 pages
publisher
Acoustical Soc Amer Amer Inst Physics
place of publication
Melville
Web of Science type
Article
Web of Science id
000386932500064
JCR category
ACOUSTICS
JCR impact factor
1.547 (2016)
JCR rank
16/31 (2016)
JCR quartile
3 (2016)
ISSN
0001-4966
1520-8524
DOI
10.1121/1.4962559
language
English
UGent publication?
yes
classification
A1
id
8508218
handle
http://hdl.handle.net/1854/LU-8508218
date created
2017-02-08 11:02:49
date last changed
2017-02-17 09:51:00
@article{8508218,
  abstract     = {Currently, there is no airborne in situ method to reconstruct with high fidelity the instantaneous elevation of a dynamically rough surface of a turbulent flow. This work proposes a holographic method that reconstructs the elevation of a one-dimensional rough water surface from airborne acoustic pressure data. This method can be implemented practically using an array of microphones deployed over a dynamically rough surface or using a single microphone which is traversed above the surface at a speed that is much higher than the phase velocity of the roughness pattern. In this work, the theory is validated using synthetic data calculated with the Kirchhoff approximation and a finite difference time domain method over a number of measured surface roughness patterns. The proposed method is able to reconstruct the surface elevation with a sub-millimeter accuracy and over a representatively large area of the surface. Since it has been previously shown that the surface roughness pattern reflects accurately the underlying hydraulic processes in open channel flow [e.g., Horoshenkov, Nichols, Tait, and Maximov, J. Geophys. Res. 118(3), 1864-1876 (2013)], the proposed method paves the way for the development of non-invasive instrumentation for flow mapping and characterization that are based on the acoustic holography principle. (C) 2016 Acoustical Society of America.},
  author       = {Krynkin, Anton and Horoshenkov, Kirill V and Van Renterghem, Timothy},
  issn         = {0001-4966},
  journal      = {JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA},
  keyword      = {SCATTERING},
  language     = {eng},
  number       = {3},
  pages        = {2064--2073},
  publisher    = {Acoustical Soc Amer Amer Inst Physics},
  title        = {An airborne acoustic method to reconstruct a dynamically rough flow surface},
  url          = {http://dx.doi.org/10.1121/1.4962559},
  volume       = {140},
  year         = {2016},
}

Chicago
Krynkin, Anton, Kirill V Horoshenkov, and Timothy Van Renterghem. 2016. “An Airborne Acoustic Method to Reconstruct a Dynamically Rough Flow Surface.” Journal of the Acoustical Society of America 140 (3): 2064–2073.
APA
Krynkin, A., Horoshenkov, K. V., & Van Renterghem, T. (2016). An airborne acoustic method to reconstruct a dynamically rough flow surface. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 140(3), 2064–2073.
Vancouver
1.
Krynkin A, Horoshenkov KV, Van Renterghem T. An airborne acoustic method to reconstruct a dynamically rough flow surface. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA. Melville: Acoustical Soc Amer Amer Inst Physics; 2016;140(3):2064–73.
MLA
Krynkin, Anton, Kirill V Horoshenkov, and Timothy Van Renterghem. “An Airborne Acoustic Method to Reconstruct a Dynamically Rough Flow Surface.” JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 140.3 (2016): 2064–2073. Print.