Acoustic and Flow Aspects of Synthetic Jet Actuators with Chevron Orifices

The use of a chevron nozzle/orifice is one the methods heat transfer enhancement and noise reduction. In case synthetic jets, number papers on this topic small. Therefore, jet actuator with three different orifices circular orifice investigated. aim study to find impact shape centerline velocity (measured hot-wire anemometer) determine if reduces generated noise. sound pressure level was strongly dependent input actuator’s power, only ensured reduction for low power (p = 6; 8 W). At real p 12 W, lower each than in actuator. It shown that application nozzle does not have provide important design new actuators are operate places where levels should be limited (e.g., offices).