Interaction of natural streaky structures with one of the two cylindrical vortices of the sinusoidal vortex street and with generation of Λ- or Ω-like vortex structures

Project: Visualization of Mechanical Processes

Journal: Visualization of Mechanical Processes: An International Online Journal

Article: INFLUENCE OF INITIAL CONDITIONS AT THE NOZZLE EXIT AND ACOUSTICAL ACTION ON THE STRUCTURE AND STABILITY OF A PLANE JET

Topics: Gas dynamics, Turbulence, Turbulence models, Flow-structure interaction, Aerodynamics, Visualization techniques

This video shows the smoke visualization patterns of the interaction process of the natural streaky structures with the vortex structures that appear in the laminar plane jet upon the acoustical action with the frequency of 30 Hz.

Plate oscillations at M=1.82 and flow density 2.45∙10-4 Visualization of Mechanical Processes 2834 The plane jet, visualized by the smoke, with the parabolic mean velocity profile at the nozzle exit: without acoustical action Visualization of Mechanical Processes 2663 Control of the round jet turbulization using longitudinal localized disturbances Visualization of Mechanical Processes 3887