Accession Number : ADA262009


Title :   Investigation of Thermoacoustic Muffler


Descriptive Note : Master's thesis


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA


Personal Author(s) : Che, Chun-Hua


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a262009.pdf


Report Date : Dec 1992


Pagination or Media Count : 40


Abstract : The design, construction and testing of a thermoacoustic muffler is discussed. The performance of the muffler is characterized by measuring its ability to reduce the quality factor Q of an acoustic resonator. Measurements of-the Q of a helium filled muffler were made for temperature differences ranging from 0 to -130 deg C. The measured Q-reduction, approximately 30%, agrees with predicted reductions. The predictions are based on a standing wave analysis of Thermoacoustic engines published by Atchley (J. Acoust. Soc. Am. 92, 2907-2914 (1992)). These results indicate that Q-reduction is possible. Future work should concentrate on optimization, to determine if a thermmoacoustic muffler is, in fact, practical.


Descriptors :   *ACOUSTIC RESONATORS , *MUFFLERS , MEASUREMENT , TEMPERATURE , OPTIMIZATION , PREDICTIONS , ENGINES , ACOUSTICS , HELIUM , AMPLITUDE , STANDING WAVES , RESONATORS , WORK , GEOMETRY , THESES , REDUCTION , CONSTRUCTION , QUALITY


Subject Categories : Acoustooptic and Optoacoustic Devices
      Acoustics


Distribution Statement : APPROVED FOR PUBLIC RELEASE