Numerical study on acoustic generation of a supersonic jet impinging to deflectors

2013 ◽  
Vol 134 (5) ◽  
pp. 4057-4057 ◽  
Author(s):  
Seiji Tsutsumi ◽  
Ryoji Takaki ◽  
Koji Okamoto ◽  
Susumu Teramoto
Keyword(s):  
Numerical Study ◽  
Supersonic Jet

Flow Stucture of Supersonic Underexpanded Jet With Microjets Injection

2013 ◽  
Vol 8 (1) ◽  
pp. 44-55
Author(s):  
Dmitriy Gubanov ◽  
Valeriy Zapryagaev ◽  
Nikolay Kiselev
Keyword(s):  
Flow Structure ◽  
Numerical Study ◽  
Mixing Layer ◽  
Supersonic Jet ◽  
Wave Structure ◽  
Streamwise Vortices ◽  
Jet Mixing ◽  
Underexpanded Jet ◽  
Supersonic Underexpanded Jet ◽  
The Impact

Experimental and numerical study of transversal microjets injection influence on the supersonic underexpanded jet flow structure has been performed. Data of measurements and calculation have acceptable agreement. Interaction of microjets with main supersonic jet sets to a decrease of an initial gasdynamic region. Microjets lead to a longitudinal streamwise vortices generation and a mushroom-like flow structures create on an external jet mixing layer. Dissipation of longitudinal streamwise vortices was observed at the second jet cell. Complex gasdynamic flow structure of the supersonic underexpanded jet interacting with supersonic microjets has been studied for the first time. This structure contains system of complex chock waves and expansion waves spreading from the position of the impact microjets/main jet localization place. Future of interaction process a chock-wave structure of main jet with additional shock waves has been studied

Numerical study of the ejection properties of a jet flowing into flooded space

2020 ◽  
Author(s):  
A.Yu. Lutsenko ◽  
V.A. Kriushin
Keyword(s):  
Pressure Distribution ◽  
Nozzle Exit ◽  
Software Package ◽  
Numerical Study ◽  
Supersonic Jet ◽  
Underlying Surface ◽  
Ansys Fluent ◽  
Fluent Software ◽  
Underexpanded Supersonic Jet ◽  
Jet Axis

The purpose of the study was to carry out a numerical simulation of the interaction of an underexpanded supersonic jet flowing into a flooded space with a normally located obstacle, and with the underlying surface. We performed the calculations in the ANSYS Fluent software package and presented flow patterns. For the case when the obstacle is located normally to the axis of the jet, we compared the pressure distribution in the radial direction with experimental data and made a conclusion about the changes in the integral load on the wall with a change in the distance to the nozzle exit. For the case when the obstacle is parallel to the jet axis, we presented the pressure distribution along the wall in the plane of symmetry, estimated the relative net force acting on the underlying surface, analyzed the nature of its change at various values of the off-design coefficient, the Mach number on the nozzle exit and the distance to the jet axis.

Numerical study of suppression of supersonic jet noise

1998 ◽  
Author(s):  
San-Yih Lin ◽  
Sheng-Jii Hsieh ◽  
Ke-Chih Chen
Keyword(s):  
Numerical Study ◽  
Supersonic Jet ◽  
Jet Noise ◽  
Supersonic Jet Noise

scholarly journals Numerical study of screech generation in a planar supersonic jet

2007 ◽  
Vol 19 (7) ◽  
pp. 075105 ◽  
Author(s):  
Julien Berland ◽  
Christophe Bogey ◽  
Christophe Bailly
Keyword(s):  
Numerical Study ◽  
Supersonic Jet

Numerical study for hysteresis phenomena of shock wave reflection in overexpanded axisymmetric supersonic jet

2006 ◽  
Vol 15 (3) ◽  
pp. 220-225 ◽  
Author(s):  
Tsuyoshi Yasunobu ◽  
Ken Matsuoka ◽  
Hideo Kashimura ◽  
Shigeru Matsuo ◽  
Toshiaki Setoguchi
Keyword(s):  
Shock Wave ◽  
Wave Reflection ◽  
Numerical Study ◽  
Supersonic Jet ◽  
Shock Wave Reflection ◽  
Hysteresis Phenomena
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