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15th CEAS - ASC Workshop - Acoustic Liners and Associated Propagation Techniques
| What | Other events |
|---|---|
| When |
Oct 13, 2011 12:00 AM
to Oct 14, 2011 12:00 AM |
| Where | Lausanne, Switzerland |
| Contact Name | Hervé Lissek |
| Location | Lausanne, Switzerland |
| Contact Email | |
| Contact Phone | +41 21 693 46 30 |
| Fax | +41 21 693 26 73 |
| Add event to calendar |
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1st Scientific workshop of XNOISE EV
SCOPE OF THE WORKSHOP
Attenuation of engine noise by acoustic liners in turbofan ducts remains one of the most effective methods of achieving aircraft noise reduction. Acoustic liners are routinely installed in the intake, bypass and inter-stage regions of turbofan engines to reduce fan noise, and in the hot stream exhaust ducts to mitigate turbine and combustion noise. Their presence attenuates selectively he acoustic modes excited by these sources and redistributes the transmitted
acoustic energy in the far field. Predicting far field EPNL in the presence of liners demands the use of analytic, numerical or data-based prediction models to account for the effects of lined surfaces and geometry changes in the ducted sections of the engine as the sound propagates to the far field.
Contributions are invited to the above workshop which touch on all aspects of liner modelling, liner impedance prediction, in situ liner performance and propagation methods. In particular, submissions are invited in the following areas:
1. Novel liner concepts, passive and adaptive.
2. Measurement of liner impedance, techniques and applications.
3. Analytic, numerical and empirical methods for predicting liner impedance.
4. Analytic, numerical and empirical methods for predicting the effect of liners on far field sound pressure.
5. Optimisation of liners to reduce community and/or interior noise.
CALL FOR PAPERS
The language of the workshop will be English. The interested speakers are invited to submit their abstracts on no more than 2 pages including authors’names and affiliations, in electronic form (Word). The speakers must provide their manuscript or their presentation in advance in electronic form (PDF or Power Point) so as to facilitate the preparation of the proceedings.
KEYDATES
19 June 2011 Submission of abstracts
17 July 2011 Notification of acceptance
14 August 2011 Advance registration
PUBLICATIONS After the workshop, appropriate presentations
will be recommended for submission to International Journal of Aeroacoustics (IJA).
Attenuation of engine noise by acoustic liners in turbofan ducts remains one of the most effective methods of achieving aircraft noise reduction. Acoustic liners are routinely installed in the intake, bypass and inter-stage regions of turbofan engines to reduce fan noise, and in the hot stream exhaust ducts to mitigate turbine and combustion noise. Their presence attenuates selectively he acoustic modes excited by these sources and redistributes the transmitted
acoustic energy in the far field. Predicting far field EPNL in the presence of liners demands the use of analytic, numerical or data-based prediction models to account for the effects of lined surfaces and geometry changes in the ducted sections of the engine as the sound propagates to the far field.
Contributions are invited to the above workshop which touch on all aspects of liner modelling, liner impedance prediction, in situ liner performance and propagation methods. In particular, submissions are invited in the following areas:
1. Novel liner concepts, passive and adaptive.
2. Measurement of liner impedance, techniques and applications.
3. Analytic, numerical and empirical methods for predicting liner impedance.
4. Analytic, numerical and empirical methods for predicting the effect of liners on far field sound pressure.
5. Optimisation of liners to reduce community and/or interior noise.
CALL FOR PAPERS
The language of the workshop will be English. The interested speakers are invited to submit their abstracts on no more than 2 pages including authors’names and affiliations, in electronic form (Word). The speakers must provide their manuscript or their presentation in advance in electronic form (PDF or Power Point) so as to facilitate the preparation of the proceedings.
KEYDATES
19 June 2011 Submission of abstracts
17 July 2011 Notification of acceptance
14 August 2011 Advance registration
PUBLICATIONS After the workshop, appropriate presentations
will be recommended for submission to International Journal of Aeroacoustics (IJA).
