{"title":"带襟翼的水翼截面设计","authors":"Young T. Shen, R. Eppler","doi":"10.2514/3.63152","DOIUrl":null,"url":null,"abstract":"The basic problem of a flapped NACA-16 foil is its poor pressure distribution around the flapped region. With the flap deflected, the velocity distribution becomes a very unfavorable shape in terms of cavitationinception and boundary-layer separation. This type of flow field results in low flap effectiveness. Based on the present profile design and boundary-layer calculation methods, improved hydrofoil wings with flaps have been developed. The approaches to construct the desired velocity distributions to delay cavitation and boundary-layer separation are discussed. Examples are given for the case that the flap deflection has to compensate the vertical component of the surface wave motion in a seaway.","PeriodicalId":157493,"journal":{"name":"Journal of Hydronautics","volume":"51 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1978-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"SECTION DESIGN FOR HYDROFOIL WINGS WITH FLAPS\",\"authors\":\"Young T. Shen, R. Eppler\",\"doi\":\"10.2514/3.63152\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The basic problem of a flapped NACA-16 foil is its poor pressure distribution around the flapped region. With the flap deflected, the velocity distribution becomes a very unfavorable shape in terms of cavitationinception and boundary-layer separation. This type of flow field results in low flap effectiveness. Based on the present profile design and boundary-layer calculation methods, improved hydrofoil wings with flaps have been developed. The approaches to construct the desired velocity distributions to delay cavitation and boundary-layer separation are discussed. Examples are given for the case that the flap deflection has to compensate the vertical component of the surface wave motion in a seaway.\",\"PeriodicalId\":157493,\"journal\":{\"name\":\"Journal of Hydronautics\",\"volume\":\"51 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1978-04-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Hydronautics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.2514/3.63152\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Hydronautics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2514/3.63152","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The basic problem of a flapped NACA-16 foil is its poor pressure distribution around the flapped region. With the flap deflected, the velocity distribution becomes a very unfavorable shape in terms of cavitationinception and boundary-layer separation. This type of flow field results in low flap effectiveness. Based on the present profile design and boundary-layer calculation methods, improved hydrofoil wings with flaps have been developed. The approaches to construct the desired velocity distributions to delay cavitation and boundary-layer separation are discussed. Examples are given for the case that the flap deflection has to compensate the vertical component of the surface wave motion in a seaway.
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