{"title":"扇贝冰特性对机翼流场结构和气动性能的影响","authors":"Chengyi Zheng, Zheyan Jin, Zhigang Yang, Lei Yu","doi":"10.1007/s00707-024-04096-6","DOIUrl":null,"url":null,"abstract":"<div><p>In the present study, an experimental investigation was carried out on the effects of scallop ice characteristics on the flow field structures and aerodynamic performance of an airfoil. Detailed measurements were performed in a low-speed reflux wind tunnel by utilizing particle image velocimetry technique and a high-sensitivity six-component balance. A parameter study on the gap width and the cutting plane angle of the scallop ice was conducted. The results showed that the gap width and the cutting plane angle had significant effects on the aerodynamic performances of airfoils with scallop ice. The change of the gap width and the cutting plane angle also had apparent influences on the flow field parameters when the angle of attack exceeded 6°. The lift and pitching moment coefficients of airfoils decreased as the gap width increased or the cutting plane angle decreased. In the selected region above the airfoils, the average dimensionless vorticity, normalized turbulent kinetic energy, and normalized Reynolds stress gradually decreased as the gap width increased. In addition, the gap width and the cutting plane angle did not have predictable influences on the drag coefficients of the airfoils and the average dimensionless velocity in the selected region.</p></div>","PeriodicalId":456,"journal":{"name":"Acta Mechanica","volume":"235 12","pages":"7245 - 7262"},"PeriodicalIF":2.3000,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of scallop ice characteristics on the flow field structures and the aerodynamic performance of an airfoil\",\"authors\":\"Chengyi Zheng, Zheyan Jin, Zhigang Yang, Lei Yu\",\"doi\":\"10.1007/s00707-024-04096-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In the present study, an experimental investigation was carried out on the effects of scallop ice characteristics on the flow field structures and aerodynamic performance of an airfoil. Detailed measurements were performed in a low-speed reflux wind tunnel by utilizing particle image velocimetry technique and a high-sensitivity six-component balance. A parameter study on the gap width and the cutting plane angle of the scallop ice was conducted. The results showed that the gap width and the cutting plane angle had significant effects on the aerodynamic performances of airfoils with scallop ice. The change of the gap width and the cutting plane angle also had apparent influences on the flow field parameters when the angle of attack exceeded 6°. The lift and pitching moment coefficients of airfoils decreased as the gap width increased or the cutting plane angle decreased. In the selected region above the airfoils, the average dimensionless vorticity, normalized turbulent kinetic energy, and normalized Reynolds stress gradually decreased as the gap width increased. In addition, the gap width and the cutting plane angle did not have predictable influences on the drag coefficients of the airfoils and the average dimensionless velocity in the selected region.</p></div>\",\"PeriodicalId\":456,\"journal\":{\"name\":\"Acta Mechanica\",\"volume\":\"235 12\",\"pages\":\"7245 - 7262\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2024-09-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Mechanica\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s00707-024-04096-6\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MECHANICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Mechanica","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s00707-024-04096-6","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MECHANICS","Score":null,"Total":0}
Effects of scallop ice characteristics on the flow field structures and the aerodynamic performance of an airfoil
In the present study, an experimental investigation was carried out on the effects of scallop ice characteristics on the flow field structures and aerodynamic performance of an airfoil. Detailed measurements were performed in a low-speed reflux wind tunnel by utilizing particle image velocimetry technique and a high-sensitivity six-component balance. A parameter study on the gap width and the cutting plane angle of the scallop ice was conducted. The results showed that the gap width and the cutting plane angle had significant effects on the aerodynamic performances of airfoils with scallop ice. The change of the gap width and the cutting plane angle also had apparent influences on the flow field parameters when the angle of attack exceeded 6°. The lift and pitching moment coefficients of airfoils decreased as the gap width increased or the cutting plane angle decreased. In the selected region above the airfoils, the average dimensionless vorticity, normalized turbulent kinetic energy, and normalized Reynolds stress gradually decreased as the gap width increased. In addition, the gap width and the cutting plane angle did not have predictable influences on the drag coefficients of the airfoils and the average dimensionless velocity in the selected region.
期刊介绍:
Since 1965, the international journal Acta Mechanica has been among the leading journals in the field of theoretical and applied mechanics. In addition to the classical fields such as elasticity, plasticity, vibrations, rigid body dynamics, hydrodynamics, and gasdynamics, it also gives special attention to recently developed areas such as non-Newtonian fluid dynamics, micro/nano mechanics, smart materials and structures, and issues at the interface of mechanics and materials. The journal further publishes papers in such related fields as rheology, thermodynamics, and electromagnetic interactions with fluids and solids. In addition, articles in applied mathematics dealing with significant mechanics problems are also welcome.