Open AccessThe influence of dual stream jet nozzle internal parts on the three-dimensional flow structure in a supersonic jet
Author(s) -
N. A. Kiselev,
V. I. Zapryagaev,
S. G. Kundasev
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1404/1/012082
Subject(s) - nozzle , duct (anatomy) , transonic , supersonic speed , mechanics , flow visualization , internal flow , jet (fluid) , choked flow , azimuth , external flow , materials science , flow (mathematics) , physics , acoustics , optics , aerodynamics , thermodynamics , medicine , pathology
The work is devoted to the experimental study of a high-speed jet exhausting from a model dual stream jet nozzle, performed using non-contact (shadow visualization) and probe (total-pressure pneumatic receiver) methods for measuring gasdynamic quantities. Azimuthal non-uniformity of the pressure distribution, whose value in the external duct is much higher than that in the internal duct, is revealed. The cause for the formation of the spatial flow structure is related to the supporting pylons inside the nozzle contour and to the occurrence of a transonic flow regime in the external duct.