Experimental investigation of the thermal behavior a single-cavity and multiple-orifice synthetic jet impingement driven by electromagnetic actuator for electronics cooling
Pushpanjay K. Singh, Santosh Kumar Sahu, Prabhat K. Upadhyay
Abstract
Present experimental study reports the thermal and flow measurement of multiple-orifice synthetic jet involving circular, square, and rectangular orifice shapes. Here, an infrared camera and constant temperature anemometer are used for measurement of surface temperature and flow velocity, respectively. Reynolds number and the dimensionless axial distance is varied within 1689–4670 and 1–25. The average Nusselt number for the multiple-orifice jet is found to be 60% higher compared to single orifice jets. The power spectral density of the velocity signal is analyzed to understand the vortex dynamics.
Topics & Concepts
Synthetic jetBody orificeReynolds numberJet (fluid)MechanicsMaterials scienceNusselt numberAnemometerOrifice plateDimensionless quantityOpticsActuatorTurbulencePhysicsMechanical engineeringElectrical engineeringEngineeringHeat Transfer MechanismsFluid Dynamics and Turbulent FlowsPlasma and Flow Control in Aerodynamics