Review of Active Control of Flow-Induced Cavity Resonance

TLDR

The paper is motivated by the growing interest in suppressing flow‑induced cavity oscillations and by the use of cavity control as a model problem in multidisciplinary flow control research. The authors review recent experimental work on active control of flow‑induced cavity oscillations, summarizing successes, failures, and outstanding issues while highlighting actuators, sensing, and control methods. The review focuses on experimental implementations of open‑ and closed‑loop control approaches, describing actuators, flow sensing, and control methodologies used to suppress cavity oscillations.

Abstract

A review of active control of flow-induced cavity oscillations is presented. This paper is motivated by two factors. First, the search for solutions to the practical problem of suppressing oscillations caused by flow over open cavities has generated significant interest in this area. Second, cavity oscillation control serves as a model problem in the growing multidisciplinary field of flow control. As such, we attempt to summarize recent activities in this area, with emphasis on experimental implementation of open- and closed-loop control approaches. In addition to describing successes, failures, and outstanding issues relevant to cavity oscillations, we highlight the characteristics of the various actuators, flow sensing and measurement, and control methodologies employed to date in order to emphasize the choices, challenges, and potential of flow control in this and other applications.