Abstract
Scale modeling rules are summarized for assessing the attenuation of heating, ventilation, and air conditioning ducts. A standard scaling approach is applied where the frequency ratio is inversely proportional to the size ratio. Scaling rules for sound absorption and breakout noise transmission are also developed. The scaling approach is first tested virtually via finite element analysis to validate the concept. This is followed by an experimental case where a small expansion chamber, similar to a plenum, and its corresponding scale model are measured. Scale model results agree with full scale measurements for both insertion loss and breakout transmission loss.
Original language | English |
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State | Published - 2017 |
Event | 46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017 - Hong Kong, China Duration: Aug 27 2017 → Aug 30 2017 |
Conference
Conference | 46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017 |
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Country/Territory | China |
City | Hong Kong |
Period | 8/27/17 → 8/30/17 |
Bibliographical note
Publisher Copyright:© 2017 Institute of Noise Control Engineering. All rights reserved.
Keywords
- HVAC ducts I-INCE classification of subjects number: 37, 51
- Scale modeling
ASJC Scopus subject areas
- Acoustics and Ultrasonics