Two-dimensional jet subjected to periodic oscillations in the potential core region

M A Badri Narayanan, S Raghu


A two-dimensional subsonic jet was subjected to small periodic oscillations in its potential core region by vibrating a thin symmetric airfoil. Significant increase in the width of the jet and entrainment was observed due to excitation. The effect of the amplitude as well as the frequency of vibration on the jet was investigated. The mean velocity profiles of the excited jet exhibited similarity.





Jet; turbulence; fluid mechanics; unsteady flow.

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