{"title":"阻塞轴对称射流近噪声场的研究","authors":"R. Westley, J. Woolley","doi":"10.3138/9781487582869-009","DOIUrl":null,"url":null,"abstract":"An experimental investigation was completed of the near sound field of a choked axisymmetric air\njet of 2.25-in diameter. The results include surveys of tbe sound pres sure levels in the area surrounding the jet and the identification of various screech frequencies.\nA schlieren system with stroboscopic spark synchronisation was used to photograph an axisymmetric\nmode and a spiralling mode of the jet oscillations.","PeriodicalId":165529,"journal":{"name":"National Research Council, Aeronautical Report LR","volume":"35 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1968-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"29","resultStr":"{\"title\":\"An investigation of the near noise fields of a choked axisymmetric air jet\",\"authors\":\"R. Westley, J. Woolley\",\"doi\":\"10.3138/9781487582869-009\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"An experimental investigation was completed of the near sound field of a choked axisymmetric air\\njet of 2.25-in diameter. The results include surveys of tbe sound pres sure levels in the area surrounding the jet and the identification of various screech frequencies.\\nA schlieren system with stroboscopic spark synchronisation was used to photograph an axisymmetric\\nmode and a spiralling mode of the jet oscillations.\",\"PeriodicalId\":165529,\"journal\":{\"name\":\"National Research Council, Aeronautical Report LR\",\"volume\":\"35 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1968-06-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"29\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"National Research Council, Aeronautical Report LR\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.3138/9781487582869-009\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"National Research Council, Aeronautical Report LR","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3138/9781487582869-009","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
An investigation of the near noise fields of a choked axisymmetric air jet
An experimental investigation was completed of the near sound field of a choked axisymmetric air
jet of 2.25-in diameter. The results include surveys of tbe sound pres sure levels in the area surrounding the jet and the identification of various screech frequencies.
A schlieren system with stroboscopic spark synchronisation was used to photograph an axisymmetric
mode and a spiralling mode of the jet oscillations.
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