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Spehr, Carsten and Alvarez, Julian and Delfs, Jan (2006) Flow-induced noise generation on orifice plates in air conditioning ducts. In: 2006 Inter-Noise. Inter-Noise 2006, 2006-12-03 2006-12-6, Honolulu, Hawaii, (USA).
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Abstract
In the present study the acoustic sources generated by turbulent flow inside internal ducts are studied experimentally. The noise is generated due to the flow passing typical components used in the aircraft climate control system, like bifurcations, orifices or bends. The experimental set-up consists of a straight tube, in which the air is driven by a silent fan followed by a silencer. This study is the first of a series of experiments to examine the influence of upstream generated turbulence on the sound generation on the components of pipe systems. In this preliminary study a configuration of one orifice with varying inner diameter is examined. The acoustic measurements were conducted for a frequency range of 63 Hz to 10 kHz. Thereby, the dependence on the generated noise on the Mach number and on the radius of the orifices could be determined.
| Item URL in elib: | https://elib.dlr.de/53619/ | ||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech, Paper) | ||||||||||||||||
| Title: | Flow-induced noise generation on orifice plates in air conditioning ducts | ||||||||||||||||
| Authors: |
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| Date: | 6 December 2006 | ||||||||||||||||
| Journal or Publication Title: | 2006 Inter-Noise | ||||||||||||||||
| Refereed publication: | No | ||||||||||||||||
| Open Access: | No | ||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||
| Status: | Published | ||||||||||||||||
| Keywords: | Air conditioning systems, noise, experimental, turbulence | ||||||||||||||||
| Event Title: | Inter-Noise 2006 | ||||||||||||||||
| Event Location: | Honolulu, Hawaii, (USA) | ||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||
| Event Dates: | 2006-12-03 2006-12-6 | ||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||
| HGF - Program: | Aeronautics | ||||||||||||||||
| HGF - Program Themes: | L VU - Air Traffic and Environment (old) | ||||||||||||||||
| DLR - Research area: | Aeronautics | ||||||||||||||||
| DLR - Program: | L VU - Air Traffic and Environment | ||||||||||||||||
| DLR - Research theme (Project): | L - Quiet Air Traffic (old) | ||||||||||||||||
| Location: | Braunschweig | ||||||||||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Technical Acoustics | ||||||||||||||||
| Deposited By: | Spehr, Dr.-Ing. Carsten | ||||||||||||||||
| Deposited On: | 17 Mar 2008 | ||||||||||||||||
| Last Modified: | 12 Dec 2013 20:30 |
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