RT Journal Article ID 0be8c4340a65c60a A1 Ramamurthi, K. A1 Patnaik, R. A1 Radhakrishnan, A. A1 Reddy, P. A1 Sujith, R. I. A1 Govardhan, R. N. T1 FLOW VISUALIZATION STUDIES OF JETS IN THE PRESENCE OF LOUD PURE TONES JF Journal of Flow Visualization and Image Processing JO JFV YR 2005 FD 2005-11-13 VO 12 IS 3 SP 197 OP 214 AB Loud pure hole tones between 2300 and 10,000 Hz were induced in a jet by establishing turbulent flow of gaseous nitrogen through a rectangular chamber with a sharp-edged orifice at the exit. Visual observations of the jet and velocity measurements indicated a very drastic spread of the jet near the orifice exit in the presence of the loud pure tones. The potential core appeared to be no longer present and the flow-field became asymmetric. The enhanced spread of the jet and the asymmetry were not observed when the flow field had a broad-band frequency spectrum. Wavelet analysis of the instantaneous planar Mie scattering flow images was performed with a view to qualitatively study and compare the entrainment and mingling in two jets with and without acoustic self-excitation. PB Begell House LK https://www.dl.begellhouse.com/journals/52b74bd3689ab10b,716d28920224a78b,0be8c4340a65c60a.html