Experimental Analysis of the Effect of Interaction Parameters on Synthetic Jet Actuator Arrays
Conference Paper
Overview
Identity
Other
View All
Overview
abstract
An experimental investigation into the behavioral dependence of an array of two synthetic jet actuators is performed. Combinations of operation and non-dimensional parameters are tested in order to investigate jet-cross flow performance for different operational regimes. The Momentum Coefficient (C) of two jets in cross-flow is characterized based on the Velocity Ratio (R). The influence of operation parameters and geometric parameters is also studied with particular emphasis on actuator spacing (s) and relative phase angle (). Synthetic Jet Actuators capable of peak speeds of over 70 m/s were developed in house and characterized using hotwire anemometry. Particle Image Velocimetry (PIV) tests are performed for quiescent conditions for fixed actuation frequency (f) and varying jet Reynolds number (ReJ) to determine operating conditions that lead to similar ReJ for both jets. PIV is then performed in cross-flow conditions with varying R, and s. The velocity results are analyzed to identify plume-cores and calculate individual and array momentum coefficients. The goal is to contribute to understanding the behavior of an array of synthetic jets as function of non-dimensional, geometric and operating parameters.
