Flow field of impinging sweeping jets

Sweeping jets are oscillating generated by fluidic oscillators, i.e., devices designed to produce an oscillation of the flow without use any moving parts (Raghu, 2013). A typical configuration such consists expansion chamber connected a high-pressure supply via converging nozzle and provided with feedback channels. The motion in is triggered inherent instability sustained rate across Recently, sweeping have been studied control applications for noise reduction, separation circulation over airfoils, resonant cavity oscillations deflection jets. advantageous features actuators, among which wide range operating frequencies (up kHz meso-scale) distributed momentum addition, also stimulated increasing interest their application electronics cooling. Several recent studies on convective heat transfer from impinging (e.g., Hossain et al., 2018; Park 2018) shown that, compared conventional round jets, they offer higher cooling rates better uniformity at least small jet-to-plate spacings.