Boundary-Layer Receptivity Measurements Using Acoustic Wave-Packet Forcing

摘要CTS-9908027 R。Radeztsky，Arizona State University边界层感受性及其对确定层流到湍流转捩过程的贡献，是空气动力学中最重要的基本流体力学问题之一。 Radeztsky/Saric研究将利用亚利桑那州立大学建立的首要实验设施，用于研究声波包与层流边界层相互作用产生的不稳定性。 波包允许ASU开发的“相分离技术”区分声学和流体动力学波动。 预计这些实验将为分析/理论工作提供重要指导。

AbstractCTS-9908027R. Radeztsky, Arizona State UniversityBoundary layer receptivity, and its contribution to determining the laminar-to-turbulent transition process, is one of the most important basic fluid mechanics issues within aerodynamics. The Radeztsky/Saric investigation will utilize the premier experimental facility that has been established at the Arizona State University for their investigation of the instabilities that are produced by the interaction of acoustic wave packets with a laminar boundary layer. The wave packets permit the ASU - developed "phase separation technique" to distinguish between the acoustic and the hydrodynamic fluctuations. It is expected that significant guidance for analytical/theoretical work will derive from these experiments.