Relaxation oscillations in the turbulent near wake

Recent Development in Flow Separation.

“…(1969)] The predicted pressure distribution using the value of A(M) evaluated by experimental data is shown in Fig.I.52, in close agreement with the measured data of Roshko and Thomke (1966). Murzinov and Shinkin (1976), computed the basic parameter of the turbulent separated flow region by using an integral method and considering the vorticity separated from the edge, which was not taken account by Gogish, et. al.…”

“…The possible existence of quasi-stationary oscillations and an approximation of the hysteresis region was indicated by Stepanov aud '"orish (1973). intense pressure pulsations during the changes of the :low regime were also observed on multinozzle arrangements and with a disk-shaped nozzle by Gogish (1969). :…”

Management of the Acoustic Characteristics of Jet Streams

“…The presence of quasi-stationary bottom pressure pulsations indicates the ambiguity of the stationary flow, which can occur either in the inviscid flow, or in the viscous layer. Different types of such ambiguity and the hysteresis and low-frequency pulsations associated with it, found during experimental studies of flat annular nozzles models (Gogish, 1969), are inherent as well for axisymmetric flows in the canals. A number of studies in which the pulsations in different types of nozzle compositions were researched, confirm the foregoing.…”