Browse > Article
http://dx.doi.org/10.5050/KSNVE.2015.25.7.503

An Experimental Study on Acoustic Performance of Splitter Silencers in Large Maritime Gas Turbine Engines  

Baek, Seonghyeon (Department of Mechanical Engineering, Chonbuk National Univers)
Lee, Kanghee (Sungshin Enstec)
Kang, Kyungsik (Sungshin Enstec)
Lee, Iljae (Department of Mechanical Engineering, Chonbuk National University)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.25, no.7, 2015 , pp. 503-509 More about this Journal
Abstract
Based on ISO 7235, an experimental setup to measure the acoustic performance of splitter type dissipative silencers was fabricated. The length of each duct, sound source, microphone locations, modal filter, and anechoic termination were considered in the design of this setup. The modal filter is a particularly important factor because it affects the limit of measurement. The effects of number of splitters, absorptive material density, perforate plate, and media on the noise reduction of the sample silencers were experimentally investigated. The experimental results show that the insertion loss of a silencer with media, high perforate opening, and higher number of splitters increases especially at higher frequencies.
Keywords
Dissipative Silencers; Insertion Loss; Splitter Silencers;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Kirby, R., Herries, D. and Amott, K., 2009, Validating Insertion Loss Predictions for HAVC Silencers, 16th International Congress on Sound and Vibration, pp. 1031-1038.
2 Jeon, S. H., Hong, C. S. and Jeong, W. B., 2008, Acoustic Performance Analysis of a Splitter Silencer, Proceedings of the KSNVE Annual Autumn Conference, pp. 332-333.
3 Kirby, R., 2005, The Influence of Baffle Fairings on the Acoustic Performance of Rectangular Splitter Silencers, Journal of the Acoustical Society of America, Vol. 118, No. 4, pp. 2302-2312.   DOI
4 Kim, C. Y., Yun, D. J., Kim, K. W. and Kim, H. J., 2010, The Research for Performance Improvement of Splitter Type Sound Attenuator, Proceedings of the KSNVE Annual Spring Conference, pp. 642-643.
5 Lee, J. H., Lee, B. Y., Nam, K. H., Kim, B. Y. and Kim, W. J., 2006, A Design Improvement of the Vent Silencer of the Industrial Plants Using Acoustic Analysis, Journal of the Korean Society of Precision Engineering, Vol. 23, No. 2, pp. 122-128.
6 Kim, B. K., Kim, S. R., Kim, H. S. and Shin, M. C., 2008, Performance Test and Evaluation of Ship Exhaust Muffler, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 18, No. 12, pp. 1237-1242.   DOI
7 Baek, S. H, Lee, K. H., Gwon, D. H. and Lee, I. J., 2014, Design and Measurement of Dissipative Silencers for Noise Reduction of Large Maritime Gas Turbine Engines, Proceedings of the KSNVE Annual Autumn Conference, pp. 367-371.
8 Kirby, R., Amott, K., Williams, P. T. and Duan, W., 2014, On the Acoustic Performance of Rectangular Splitter Silencers in the Presence of Mean Flow, Journal of Sound and Vibration, Vol. 333, No. 24, pp. 6295-6311.   DOI
9 ISO 7235, 2003, Acoustics- Laboratory Measurement Procedures for Ducted Silencers and Air-terminal Units -Insertions Loss, Flow Noise and Total Pressure Loss.
10 Ver, I. L. and Beranek, L. L., 2006, Noise and Vibration Control Engineering, John Wiley & Sons, Inc.