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

该奖项将支持克拉克森大学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的作用，这是一个对航空航天工业非常感兴趣和重要的话题。研究人员将使用以下全部或部分技术检查五个不同剪切层中的相干结构：伪流可视化、适当正交分解（POD）和动力系统理论。这五种流动分别是：平面混合层、叶状混合器（一种产生流向涡度的装置）、轴对称射流混合层、轴对称突然膨胀中的分离流和超声速尾迹。法国研究小组将为这项工作做出重大贡献，因为他们对平面剪切层进行了广泛的研究，并且在伪流动可视化技术的应用方面有丰富的知识。此外，普瓦捷大学拥有研究超音速流动的独特设施。

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 .