{"title":"配备叶尖进气尖叫器的航空涡轮叶片损耗图","authors":"Jae Sung Jeong, Sang Woo Lee","doi":"10.1007/s12206-024-0825-2","DOIUrl":null,"url":null,"abstract":"<p>The full loss data for the IS (inlet squealer) tip with the wide changes of squealer height (<i>h</i><sub>st</sub>) and tip clearance (<i>h</i>) are measured in an aeroengine turbine blade cascade of downstream-to-upstream velocity ratio (<i>VR</i>) = 2.01 with a five-hole probe instrumentation system. The loss map shows that the variation of IS tip loss with hst/s is strongly dependent upon h/s, contrary to the full squealer tip case. The IS tip loss tends to increase with <i>h</i><sub>st</sub>/<i>s</i> for low <i>h/s</i>, whereas it tends to decrease with <i>h</i><sub>st</sub>/<i>s</i> for high <i>h/s</i>. The noticeable loss reduction by the IS tip can be attained when <i>h/s</i> ≥ 1.5 % especially for high h<i>st</i>/s. The comparison among IS tip losses in three cascades of <i>VR</i> = 1.2 (weak reaction), 2.01 (medium reaction), and 2.4 (strong reaction) reveals that the IS tip-to-flat tip loss ratio is affected considerably by <i>VR</i> (turbine reaction).</p>","PeriodicalId":16235,"journal":{"name":"Journal of Mechanical Science and Technology","volume":null,"pages":null},"PeriodicalIF":1.5000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Loss map for aeroengine turbine blade equipped with tip inlet squealer\",\"authors\":\"Jae Sung Jeong, Sang Woo Lee\",\"doi\":\"10.1007/s12206-024-0825-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The full loss data for the IS (inlet squealer) tip with the wide changes of squealer height (<i>h</i><sub>st</sub>) and tip clearance (<i>h</i>) are measured in an aeroengine turbine blade cascade of downstream-to-upstream velocity ratio (<i>VR</i>) = 2.01 with a five-hole probe instrumentation system. The loss map shows that the variation of IS tip loss with hst/s is strongly dependent upon h/s, contrary to the full squealer tip case. The IS tip loss tends to increase with <i>h</i><sub>st</sub>/<i>s</i> for low <i>h/s</i>, whereas it tends to decrease with <i>h</i><sub>st</sub>/<i>s</i> for high <i>h/s</i>. The noticeable loss reduction by the IS tip can be attained when <i>h/s</i> ≥ 1.5 % especially for high h<i>st</i>/s. The comparison among IS tip losses in three cascades of <i>VR</i> = 1.2 (weak reaction), 2.01 (medium reaction), and 2.4 (strong reaction) reveals that the IS tip-to-flat tip loss ratio is affected considerably by <i>VR</i> (turbine reaction).</p>\",\"PeriodicalId\":16235,\"journal\":{\"name\":\"Journal of Mechanical Science and Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2024-09-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Mechanical Science and Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1007/s12206-024-0825-2\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Mechanical Science and Technology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s12206-024-0825-2","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
Loss map for aeroengine turbine blade equipped with tip inlet squealer
The full loss data for the IS (inlet squealer) tip with the wide changes of squealer height (hst) and tip clearance (h) are measured in an aeroengine turbine blade cascade of downstream-to-upstream velocity ratio (VR) = 2.01 with a five-hole probe instrumentation system. The loss map shows that the variation of IS tip loss with hst/s is strongly dependent upon h/s, contrary to the full squealer tip case. The IS tip loss tends to increase with hst/s for low h/s, whereas it tends to decrease with hst/s for high h/s. The noticeable loss reduction by the IS tip can be attained when h/s ≥ 1.5 % especially for high hst/s. The comparison among IS tip losses in three cascades of VR = 1.2 (weak reaction), 2.01 (medium reaction), and 2.4 (strong reaction) reveals that the IS tip-to-flat tip loss ratio is affected considerably by VR (turbine reaction).
期刊介绍:
The aim of the Journal of Mechanical Science and Technology is to provide an international forum for the publication and dissemination of original work that contributes to the understanding of the main and related disciplines of mechanical engineering, either empirical or theoretical. The Journal covers the whole spectrum of mechanical engineering, which includes, but is not limited to, Materials and Design Engineering, Production Engineering and Fusion Technology, Dynamics, Vibration and Control, Thermal Engineering and Fluids Engineering.
Manuscripts may fall into several categories including full articles, solicited reviews or commentary, and unsolicited reviews or commentary related to the core of mechanical engineering.