Abstract
This chapter presents the results of numerical investigations of a synthetic jet actuator for an active flow control system. The Moving–Deforming-Mesh (MDM) method as a boundary condition is used to capture the real physical phenomenon and investigate the influence of the membrane amplitude, the forcing frequency, and cavity effect on the jet velocity. Different cases are investigated to maximize the jet velocity—an actuator with one and two membranes in a cavity, with perpendicular and parallel membranes. Two main forcing frequencies can be specified in the synthetic jet actuator application. One corresponds to the diaphragm natural frequency, and the other corresponds to the cavity resonant frequency (the Helmholtz frequency). Results of actuators operating at the two abovementioned forcing frequencies are presented. The simulation results show an increase in the jet velocity as a result of an increase in the membrane peak-to-peak displacement. Synthetic jet actuators’ impact on the flow separation reduction will be investigated on the bump model. Preliminary simulation results of the flow separation over the bump are presented in this chapter as well.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.