IMPINGEMENT OF AN UNDEREXPANDED SONIC JET ON A CYLINDRICAL BODY

1999 ◽  
Vol 6 (2) ◽  
pp. 105-114
Author(s):  
Hideo Kashimura ◽  
Tsuyoshi Yasunobu ◽  
Manabu Takao ◽  
Toshiaki Setoguchi
Keyword(s):  
Cylindrical Body ◽  
Sonic Jet

Chaos in body–vortex interactions

2010 ◽  
Vol 466 (2119) ◽  
pp. 1871-1891 ◽  
Author(s):  
Johan Roenby ◽  
Hassan Aref
Keyword(s):  
Body Shape ◽  
Mass Density ◽  
Relative Equilibrium ◽  
Large Body ◽  
Point Vortex ◽  
Cylindrical Body ◽  
The Body ◽  
Body Motion ◽  
Single Vortex ◽  
Vortex Interactions

The model of body–vortex interactions, where the fluid flow is planar, ideal and unbounded, and the vortex is a point vortex, is studied. The body may have a constant circulation around it. The governing equations for the general case of a freely moving body of arbitrary shape and mass density and an arbitrary number of point vortices are presented. The case of a body and a single vortex is then investigated numerically in detail. In this paper, the body is a homogeneous, elliptical cylinder. For large body–vortex separations, the system behaves much like a vortex pair regardless of body shape. The case of a circle is integrable. As the body is made slightly elliptic, a chaotic region grows from an unstable relative equilibrium of the circle-vortex case. The case of a cylindrical body of any shape moving in fluid otherwise at rest is also integrable. A second transition to chaos arises from the limit between rocking and tumbling motion of the body known in this case. In both instances, the chaos may be detected both in the body motion and in the vortex motion. The effect of increasing body mass at a fixed body shape is to damp the chaos.

Thermal effects of a sonic jet fire impingement on a pipe

2021 ◽  
Vol 71 ◽  
pp. 104449
Author(s):  
Vahid Foroughi ◽  
Adriana Palacios ◽  
Carlos Barraza ◽  
Alba Àgueda ◽  
Christian Mata ◽  
...  
Keyword(s):  
Thermal Effects ◽  
Sonic Jet

Study of Correctly Expanded Sonic Jet with Air Tabs

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Arun Prasad R ◽  
Thanigaiarasu S ◽  
Sembaruthi M ◽  
Rathakrishnan E
Keyword(s):  
Numerical Study ◽  
Cross Sectional ◽  
Potential Core ◽  
Convergent Nozzle ◽  
Jet Mixing ◽  
Pressure Profiles ◽  
Constant Diameter ◽  
Sonic Jet ◽  
Sectional Shape ◽  
Length Reduction

AbstractThe present numerical study is to understand the effect of air tabs located at the exit of a convergent nozzle on the spreading and mixing characteristics of correctly expanded sonic primary jet. Air tabs used in this study are two secondary jets issuing from constant diameter tubes located diametrically opposite at the periphery of the primary nozzle exit, normal to the primary jet. Two air tabs of Mach numbers 1.0 to 1.4, in steps of 0.1 are considered in this study. The mixing modification caused by air tabs are analysed by considering the mixing of uncontrolled (free) primary jet as a reference. Substantial enhancement in jet mixing is achieved with Mach 1.4 air tabs, which results in 80 % potential core length reduction. The total pressure profiles taken on the plane (YZ) normal to the primary jet axis, at various locations along the primary jet centreline revealed the modification of the jet cross sectional shape by air tabs. The stream-wise vortices and bifurcation of the primary jet caused by air tabs are found to be the mechanism behind the enhanced jet mixing.

Development of flow field when a symmetrical underexpanded sonic jet impinges on a flat plate

1981 ◽  
Vol 113 (-1) ◽  
pp. 299 ◽  
Author(s):  
J. Iwamoto ◽  
B. E. L. Deckker
Keyword(s):  
Flow Field ◽  
Flat Plate ◽  
Sonic Jet

scholarly journals A Sonic Jet Corona Ionizer for Electrostatic Discharge and Aerosol Neutralization

1994 ◽  
Vol 20 (1) ◽  
pp. 31-41 ◽  
Author(s):  
Francisco J. Romay ◽  
Benjamin Y. H. Liu ◽  
David Y. H. Pui
Keyword(s):  
Electrostatic Discharge ◽  
Sonic Jet

Radiation and diffraction analysis of a cylindrical body with a moon pool

2013 ◽  
Vol 25 (2) ◽  
pp. 196-204 ◽  
Author(s):  
Hua-wei Zhou ◽  
Hong-sheng Zhang
Keyword(s):  
Diffraction Analysis ◽  
Cylindrical Body ◽  
Moon Pool

The self-induced oscillations of the under expanded jets impinging upon a cylindrical body

2002 ◽  
Vol 16 (11) ◽  
pp. 1448-1456 ◽  
Author(s):  
Heuy-Dong Kim ◽  
Hideo Kashimura ◽  
Toshiaki Setoguchi
Keyword(s):  
Cylindrical Body ◽  
The Self

Aerodynamic Flow Control of an Unstable Slender Cylindrical Body at High Incidence

2021 ◽  
Author(s):  
Edward Lee ◽  
You Huang ◽  
Bojan Vukasinovic ◽  
Ari Glezer
Keyword(s):  
Flow Control ◽  
Cylindrical Body ◽  
High Incidence ◽  
Aerodynamic Flow Control
Sign in / Sign up

Export Citation Format

Share Document