Experimental measurements and flow visualization of synthetic jets and similar continuous jets are described. The dimensionless stroke length necessary to form a 2-D synthetic jet is between 5 and 10, with wider-nozzle jets consistently requiring a smaller value. Synthetic jets are wider, slower and have more momentum than similar continuous jets. Synthetic jets are generated using four nozzle ...

The present study proposes novel micro-jet impingement heat sink with effusion holes for flow extraction. The design consists of impingement nozzles surrounded by multiple effusion holes to take away the spent fluid. A three-dimensional numerical model is used for steady, incompressible, laminar flow and conjugate heat transfer for the performance analysis of the proposed design. The computatio...

In order to understand the differences between dual synthetic jets (DSJs) and (SJs), particle image velocimetry (PIV) technology is used capture basic flow field characteristics of a jet actuator (DSJA) (SJA), then careful comparison them implemented. The results indicate that cycle DSJ divided into two stages. near-field downstream, pair entrain fluid around interact with each other, making co...

In the paper, impact of limitation environment around office synthetic jet actuators were tested. One short and three length orifices tested compared with without confinement plate. total, seven different investigated. The constant temperature anemometer was used for velocity measurements. Reynolds number in range 2300 < Re 19,500, Stokes 46 S 62. plate decreased depending on actuator supply...

Abstract The development of methods active separation flow control is great applied importance for many technical and engineering applications. Understanding the conditions from surface a bluff body essential design aircrafts, cars, hydro gas turbines, bridges buildings. Drag, acoustic noise, vibrations mixing depend drastically on parameters vortex process. We investigated possibility reducing...