U.S.-France Cooperative Research: An Examination of Turbulent Shear Layers

美法合作研究：湍流剪切层的检验

• 批准号: 9016045
• 负责人: Mark Glauser
• 金额: $ 1.39万
• 依托单位: Clarkson University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-04-01 至 1993-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9016045&HistoricalAwards=false
• 关键词: U.S.; France; Cooperative; Research; Examination

This award will support collaborative research between Dr. Mark Glauser, Clarkson University and two French scientists: Dr. Jean-Paul Bonnet and Dr. Joel Delville, both from the Laboratory for Aerodynamic Studies, University of Poitiers, France. The object of the project is to investigate the role that coherent structures play in practical turbulent flows, a topic of great interest and importance to the aerospace industry. The investigators will examine coherent structures in five different shear layers, using all or part of the following techniques: pseudo-flow visualization, proper orthagonal decomposition (POD) and dynamical systems theory. The five flows are: the plane mixing layer, the lobed mixer (a device used to generate streamwise vorticity), the axisymmetric jet mixing layer, the separated flow in an axisymmetric sudden expansion, and a supersonic wake. The French research group will provide a significant contribution to this effort, since they have studied the plane shear layer extensively and are knowledgeable in the application of the pseudo flow visualization technique. In addition, the University of Poitiers has unique facilities for the study of supersonic flow .

该奖项将支持克拉克森大学的 Mark Glauser 博士和两位法国科学家：Jean-Paul Bonnet 博士和 Joel Delville 博士之间的合作研究，他们都来自法国普瓦捷大学空气动力学研究实验室。 该项目的目的是研究相干结构在实际湍流中所起的作用，这是航空航天工业非常感兴趣和重要的一个主题。 研究人员将使用以下全部或部分技术来检查五个不同剪切层中的相干结构：伪流动可视化、适当正交分解（POD）和动力系统理论。 这五种流动是：平面混合层、波瓣混合器（用于产生流向涡量的装置）、轴对称射流混合层、轴对称突然膨胀中的分离流和超音速尾流。 法国研究小组将为这项工作做出重大贡献，因为他们广泛研究了平面剪切层，并且在伪流可视化技术的应用方面拥有丰富的知识。 此外，普瓦捷大学拥有独特的超音速流研究设施。