{"id":{"repo_id":"nps","oai_identifier":"oai:calhoun.nps.edu:10945/24186"},"canonical_url":"https://search.dev.ndltd.org/etd/nps/oai:calhoun.nps.edu:10945/24186","repository":{"repo_id":"nps","name":"Naval Postgraduate School","base_url":"https://calhoun.nps.edu/server/oai/request"},"display":{"title":"Investigation of thermoacoustic muffler","abstract":"The design, construction and testing of a thermoacoustic muffler is discussed. The performance of the muffler is characterized by its ability to reduce the quality factor Q of an acoustic resonator. Measurement of the Q of a helium filler muffler were made for temperature differences ranging from 0 to -130 degrees 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 thermoacoustic muffler is, in fact, practical.","abstract_html":"The design, construction and testing of a thermoacoustic muffler is discussed. The performance of the muffler is characterized by its ability to reduce the quality factor Q of an acoustic resonator. Measurement of the Q of a helium filler muffler were made for temperature differences ranging from 0 to -130 degrees 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 thermoacoustic muffler is, in fact, practical.","abstract_has_math":false,"creators":["Che, Chun-Hua"],"institution":"Monterey, California: Naval Postgraduate School","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":"Engineering Acoustics Academic Committee","school":null,"contributors":[],"advisors":["Atchley, Anthony A.","Gaitan, Felipe"],"committee_chairs":[],"committee_members":[],"year":1992,"date_issued":"1992-12","date_published":"1992-12","updated_at":"2026-07-27T20:26:05Z","subjects":[],"languages":["en_US"],"rights":["Copyright is reserved by the copyright owner"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/10945/24186","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Atchley, Anthony A.","Gaitan, Felipe"]},{"key":"dc:contributor.department","label":"Department","values":["Engineering Acoustics Academic Committee"]},{"key":"dc:creator","label":"Author","values":["Che, Chun-Hua"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["December 1992"]},{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2012-11-29T16:21:10Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2012-11-29T16:21:10Z"]},{"key":"dc:date.issued","label":"Date","values":["1992-12"]},{"key":"dc:publisher","label":"Institution","values":["Monterey, California: Naval Postgraduate School"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en_US"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright is reserved by the copyright owner"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/10945/24186"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The design, construction and testing of a thermoacoustic muffler is discussed. The performance of the muffler is characterized by its ability to reduce the quality factor Q of an acoustic resonator. Measurement of the Q of a helium filler muffler were made for temperature differences ranging from 0 to -130 degrees 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 thermoacoustic muffler is, in fact, practical."]},{"key":"dc:title","label":"Title","values":["Investigation of thermoacoustic muffler"]}]}],"canonical_facts":{"dc:contributor.advisor":["Atchley, Anthony A.","Gaitan, Felipe"],"dc:contributor.department":["Engineering Acoustics Academic Committee"],"dc:creator":["Che, Chun-Hua"],"dc:date":["December 1992"],"dc:date.accessioned":["2012-11-29T16:21:10Z"],"dc:date.available":["2012-11-29T16:21:10Z"],"dc:date.issued":["1992-12"],"dc:description.abstract":["The design, construction and testing of a thermoacoustic muffler is discussed. The performance of the muffler is characterized by its ability to reduce the quality factor Q of an acoustic resonator. Measurement of the Q of a helium filler muffler were made for temperature differences ranging from 0 to -130 degrees 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 thermoacoustic muffler is, in fact, practical."],"dc:identifier.uri":["https://hdl.handle.net/10945/24186"],"dc:language.iso":["en_US"],"dc:publisher":["Monterey, California: Naval Postgraduate School"],"dc:rights":["Copyright is reserved by the copyright owner"],"dc:title":["Investigation of thermoacoustic muffler"],"dc:type":["Thesis"]},"updated_at":"2026-07-27T20:26:05Z"}