Enhancement and Destabilization of Flow Structure by Forced Excitation of Globally - Unstable Flow Systems

对流固相互作用的基本机理进行了实验研究。通过控制气缸的运动，可以改变单个气缸和多个气缸的流量。第一个主要目标是确定基本的流动结构和负荷，负责进出气缸的能量传递。第二个主要目标是通过各种激励模式优化大尺度涡旋流结构的相干性或破坏。本研究的结果将增强预测和或防止流动对结构振荡的激励的能力。它还涉及到能量转移到各种其他工程系统的增强。

An experimental investigation of the basic mechanisms responsible for flow-structure interaction is to be carried out. Flow about single and multiple cylinders will be modified through controlled motion of the cylinders. The first major objective is to determine the basic flow structure and loading responsible for energy transfer both into and out of the cylinders. The second major objective is to optimize the coherence or destruction of large scale vortical flow structures through various modes of excitation. The ability to predict and or prevent excitation of structural oscillations by flows will be enhanced by the results of this study. It also relates to the enhancement of energy transfer into various other engineering systems.