Flow instability and momentum exchange in separation control by a synthetic jet

Effectiveness of micro synthetic jet actuator enhanced by flow instability in controlling laminar separation caused by adverse pressure gradient

This paper aims to understand how a micro synthetic jet actuator works effectively to prevent the boundary layer flow from laminar separation aused by adverse pressure gradient. Experimental results showed that synthetic jets were effective when the forcing frequency was a lower frequency f the Tollmien–Schlichting (T–S) wave, which received amplification from the base flow. They demonstrated t...

Study of flow separation over an airfoil with synthetic jet control using large-eddy simulation

Large-eddy simulation of flow separation over an airfoil with synthetic jet control

Experimental Study on the Effect of Synthetic Jet on Flow Boiling Instability in a Microchannel

Two-phase flow instability in microchannel flow boiling exhibits pressure fluctuations with different frequencies and amplitudes. One possible way to suppress the dynamic instability is to introduce synthetic jet near the inlet of the channel. An important feature of synthetic jet is that it allows momentum transfer into the microchannel flow without net mass injection into it. The strength and...

Some aspects of aerodynamic flow control using synthetic-jet actuation.

Aerodynamic flow control effected by interactions of surface-mounted synthetic (zero net mass flux) jet actuators with a local cross flow is reviewed. These jets are formed by the advection and interactions of trains of discrete vortical structures that are formed entirely from the fluid of the embedding flow system, and thus transfer momentum to the cross flow without net mass injection across...