Abstract
Results of experimental studies on round and plane, macro- and microjets subjected to transverse acoustic field at low Reynolds numbers are presented. A new phenomenon associated with transformation of the round microjet to the plane one under acoustic forcing is revealed. Also, bifurcation of the round microjet is observed. It is shown that both plane macro- and microjets are prone to a sinusoidal instability. As is found, the plane microjet becomes twisted at its periphery in the direction of the oscillatory flow velocity induced by acoustic waves. Acoustic influence both upon the pseudo-plane and the planemicrojets results in their sinusoidal oscillations and bifurcation. New phenomena observed in the present experiments on the round and plane microjets are caused by a proportionality of the acoustic energy with that of the microjets.
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Kozlov, V.V., Grek, G.R., Litvinenko, Y.A. et al. Round and plane jets in a transverse acoustic field. J. Engin. Thermophys. 20, 272–289 (2011). https://doi.org/10.1134/S1810232811030052
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DOI: https://doi.org/10.1134/S1810232811030052