Experimental and Computational Visualization and Frequency Measurements of the Jet Oscillation inside a Fluidic Oscillator

Article type: Research Article

Authors: Uzol, O. | Camci, C.

Affiliations: Department of Aerospace Engineering, Pennsylvania State University, University Park, PA 16802, USA.

Note: [] Currently at Department of Mechanical Engineering, Johns Hopkins University, Baltimore MD 21218, USA.

Abstract: PIV measurements and computational simulations (2D, unsteady Navier-Stokes) are performed to visualize the inherently unsteady jet oscillation inside a fluidic oscillator. Both the measurements and computations are obtained for a jet exit Reynolds number of 321, based on the maximum velocity and the nozzle width at the jet exit plane. The computed jet oscillation frequency is in close agreement with the measured PIV frequency. Formation of a pressure gradient across the jet is observed from the computations. The variation of the jet oscillation frequency with jet exit Reynolds number is also determined by single sensor hot-wire measurements inside the oscillation chamber.

Keywords: visualization, PIV , jet oscillation , fluidic oscillator

Journal: Journal of Visualization, vol. 5, no. 3, pp. 263-272, 2002