Influence of nozzle vibrations on the aerodynamic characteristics of a jet

Numerical simulations of a subsonic round jet with transverse acoustic and mechanical forcing

“…The similar trends for dependencies of α(V0) or α(St) have been earlier seen in [4-6, 9-11, 14] for the different mechanical or acoustic forcing types. 3); in the present study with acoustic forcing at Re = 500 and V0/U ≈ 0.006 (4), 0.01U (5); in the measurements [4] with acoustic forcing at Re = 491 (6), 679 (7), 875 (8).…”

“…15. Curves α(St) in the preceding runs [5, 9, 10] with inlet vibrations at Re = 100 and Z0 = 0.5D (1), Re = 250 and Z0 = 0.5D (2), Re = 500 and Z0 = 0.05D (3); in the present study with acoustic forcing at Re = 500 and V0/U ≈ 0.006 (4), 0.01U (5); in the measurements[4] with acoustic forcing at Re = 491 (6), 679(7), 875(8).…”

“…The present study shows first the computation results for a free round jet excited by the transverse acoustic field from a single-mode sound source placed at the lateral boundary as in the laboratory experiments [3][4], in comparison with those by the transverse mechanical vibration of the inlet wall section as in the physical experiments [7] and numerical studies [5,[8][9][10]. It is of interest here to check the limits of physical parameters, e.g.…”