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Rausch, Anne and Fischer, André and Kings, Nancy and Bake, Friedrich and Röhle, Ingo (2012) Optical measurement of acoustic pressure amplitudes—at the sensitivity limits of Rayleigh scattering. Optics Letters, Vol 37 (No. 13), pp. 2685-2687. Optical Society of America.
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Official URL: http://www.opticsinfobase.org/ol/upcomingissue.cfm
Abstract
Rayleigh scattering is a measurement technique applicable for the determination of density distributions in various technical or natural flows. The current sensitivity limits of the Rayleigh scattering technique were investigated experimentally. It is shown that it is possible to measure density oscillations caused by acoustic pressure oscillations noninvasively and directly. Acoustical standing waves in a rectangular duct were investigated using Rayleigh scattering and compared to microphone measurements. The comparison showed a sensitivity of the Rayleigh scattering technique of 75 Pa (7 · 10^(−4) kg∕m3) and a precision of 14 Pa (1 · 10^(−4) kg∕m3). Therefore, it was also shown that Rayleigh scattering is applicable for acoustic measurements.
| Item URL in elib: | https://elib.dlr.de/77027/ | ||||||||||||||||||
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| Document Type: | Article | ||||||||||||||||||
| Title: | Optical measurement of acoustic pressure amplitudes—at the sensitivity limits of Rayleigh scattering | ||||||||||||||||||
| Authors: |
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| Date: | 1 July 2012 | ||||||||||||||||||
| Journal or Publication Title: | Optics Letters | ||||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||||
| Open Access: | No | ||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||
| In SCOPUS: | Yes | ||||||||||||||||||
| In ISI Web of Science: | Yes | ||||||||||||||||||
| Volume: | Vol 37 | ||||||||||||||||||
| Page Range: | pp. 2685-2687 | ||||||||||||||||||
| Publisher: | Optical Society of America | ||||||||||||||||||
| Series Name: | Optics Letters | ||||||||||||||||||
| Status: | Published | ||||||||||||||||||
| Keywords: | sensitivity limits of Rayleigh scattering, density oscillations, acoustic pressure oscillation, microphone measurements, | ||||||||||||||||||
| HGF - Research field: | Energy, Aeronautics, Space and Transport | ||||||||||||||||||
| HGF - Program: | Efficient Energy Conversion and Use (old), Aeronautics | ||||||||||||||||||
| HGF - Program Themes: | Power Plants (old), Propulsion Systems (old) | ||||||||||||||||||
| DLR - Research area: | Energy, Aeronautics | ||||||||||||||||||
| DLR - Program: | E VG - Combustion and Gas Turbine Technologies, L ER - Engine Research | ||||||||||||||||||
| DLR - Research theme (Project): | E - Gasturbine (old), L - Combustion Chamber Technologies (old) | ||||||||||||||||||
| Location: | Köln-Porz | ||||||||||||||||||
| Institutes and Institutions: | Institute of Propulsion Technology > Turbine Institute of Propulsion Technology > Engine Acoustic | ||||||||||||||||||
| Deposited By: | Giess, Dr.-Ing. Peter-Anton | ||||||||||||||||||
| Deposited On: | 22 Aug 2012 11:19 | ||||||||||||||||||
| Last Modified: | 26 Mar 2013 13:41 |
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