Unsteady numerical solutions for a plane jet issuing from a narrow slit into a submerged space
S.N. Yakovenko
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
Keywords: плоская струя, неустойчивость, поперечные колебания, численное моделирование, поле скорости, завихренность, plane jet, instability, lateral oscillations, numerical simulation, velocity field, vorticity
Abstract
The results of numerical simulations of a jet discharging from a narrow slit at low Reynolds numbers Re are presented. A comparison with the data of laboratory experiments is performed, and it is shown that steady numerical solutions with increasing Re transform into unsteady solutions with self-excitation of sinusoidal instability. Lateral oscillations are superimposed at the inlet section, and their influence on the jet behavior is studied.
|
