... waves to compress the reactants, and therefore requires no mechanical compression or expansion system. As such, pulsejets are mechanically very simple, and most contain only one (or even no) passively moving part(s). With strong acoustic waves travelling back and forth, the pulsejet runs periodically...

... to a radial pressure gradient induced by a relatively fast acoustic wave, which the simple 1D model does not account for. The acoustic wave is followed by a slower momentum wave of decreased axial velocity initiated at the nozzle, which is convected downstream at the local flow velocities. The largest...

... to the contents of the cavity being different in the real situation from the idealized laboratory simulation. cavitation external flows confined flow flow visualisation acoustic waves acoustic measurement drops two-phase flow 04 01 2006 14 07 2006 Both Figs. 18 19 include two...

... of the naturally amplified disturbances in the separated shear layer. The results suggest that acoustic waves play a dominant role in exciting the separated shear layer of the airfoil. Moreover, low-frequency structural vibrations are found to have a significant effect on airfoil performance, as they enhance...