{"title":"高阶波对消声器性能的影响","authors":"Zeng Fa-lin, Liu Dehua, Zeng Yuping","doi":"10.1109/ICOIP.2010.70","DOIUrl":null,"url":null,"abstract":"The existence of higher order mode waves (HOMW) in expansion mufflers is proved theoretically. The 3 - D finite element method is used to obtain the four-pole parameters of a muffler which are in turn used to calculate the transmission loss. With this method, the distribution of sound pressure in a muffler is obtained, the effects of HOMW on the muffler performance are investigated and a technique to improve the muffler performance is put forward. It shows that, because of HOMW, the sound wave in expansion chamber is not in plane form; HOMW can decrease the capability of muffler; and the positions of inlet and outlet are important to the performance of mufflers.","PeriodicalId":333542,"journal":{"name":"2010 International Conference on Optoelectronics and Image Processing","volume":"4 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Effects of Higher Order Mode Waves on Muffler Performance\",\"authors\":\"Zeng Fa-lin, Liu Dehua, Zeng Yuping\",\"doi\":\"10.1109/ICOIP.2010.70\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The existence of higher order mode waves (HOMW) in expansion mufflers is proved theoretically. The 3 - D finite element method is used to obtain the four-pole parameters of a muffler which are in turn used to calculate the transmission loss. With this method, the distribution of sound pressure in a muffler is obtained, the effects of HOMW on the muffler performance are investigated and a technique to improve the muffler performance is put forward. It shows that, because of HOMW, the sound wave in expansion chamber is not in plane form; HOMW can decrease the capability of muffler; and the positions of inlet and outlet are important to the performance of mufflers.\",\"PeriodicalId\":333542,\"journal\":{\"name\":\"2010 International Conference on Optoelectronics and Image Processing\",\"volume\":\"4 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2010-11-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2010 International Conference on Optoelectronics and Image Processing\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICOIP.2010.70\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2010 International Conference on Optoelectronics and Image Processing","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICOIP.2010.70","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Effects of Higher Order Mode Waves on Muffler Performance
The existence of higher order mode waves (HOMW) in expansion mufflers is proved theoretically. The 3 - D finite element method is used to obtain the four-pole parameters of a muffler which are in turn used to calculate the transmission loss. With this method, the distribution of sound pressure in a muffler is obtained, the effects of HOMW on the muffler performance are investigated and a technique to improve the muffler performance is put forward. It shows that, because of HOMW, the sound wave in expansion chamber is not in plane form; HOMW can decrease the capability of muffler; and the positions of inlet and outlet are important to the performance of mufflers.
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