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Abstract
A new method for direct control of energy-intensive coherent vortex structures (ECVS) in a vortex chamber is provided with stable vortex wires, which are descended from the lateral edges of a small elongated wing which is mounted in the inlet nozzle of the chamber. The main task is to determine the reaction of the ECVS in the dead-end ("passive") and the flow ("active") parts of the chamber to the control actions of the nozzle exciter is solved. The efficiency of the principle of mutual susceptibility of vortex structures on the processes of controlling coherent structures for bounded flows in the fields of centrifugal forces is experimentally proved. The observed phenomenon of "pumping" energy of pulsations from small vortices to larger ones allows it to be used to control aerodynamic and hydrodynamic processes of mixing and thermal processes in vortex process and energy devices.
Highlights
Furnace units for power and industrial boilers, combustion chambers of gas turbine units, cyclones, separators and similar vortex devices have the same feature in common: they all take advantage of the action of centrifugal forces
The well-known phenomenon of centrifugal instability leads to the formation of coherent vortex structures (CVS) of the GötorlerTaylor, Ludwig, and other types in the near-wall regions [1, 2]
The objective is to determine the response of energy-intensive spiral-shaped CVSs in the dead-end ("passive") and the flow ("active") parts of the chamber to the control actions of the nozzle vortex generator (VG)
Summary
Furnace units for power and industrial boilers, combustion chambers of gas turbine units, cyclones, separators and similar vortex devices have the same feature in common: they all take advantage of the action of centrifugal forces. The objective is to determine the response of energy-intensive spiral-shaped CVSs in the dead-end ("passive") and the flow ("active") parts of the chamber to the control actions of the nozzle vortex generator (VG).
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