scholarly journals VELOCITY AND TEMPERATURE DISTRIBUTIONS IN AN UNDEREXPANDED SUPERSONIC JET BY USING A LASER INDUCED FLUORESCENCE

1991 ◽  
Vol 7 (Supple) ◽  
pp. 1459-1462 ◽  
Author(s):  
KOICHI KURITA ◽  
TAKASHI OKAI ◽  
KAZUAKI UENO ◽  
NORIYUKI KAWADA ◽  
MITSUO KATO
Keyword(s):  
Supersonic Jet ◽  
Laser Induced Fluorescence ◽  
Temperature Distributions ◽  
Underexpanded Supersonic Jet

Internal Temperature Distributions of Vaporizing Droplets: Effect of Their Spacing

2010 ◽  
Author(s):  
G. Castanet ◽  
A. Labergue ◽  
F. Lemoine
Keyword(s):  
Heat Transfer ◽  
Laser Induced Fluorescence ◽  
Simplified Model ◽  
Fluorescence Technique ◽  
Internal Temperature ◽  
Fluid Circulation ◽  
Heat Advection ◽  
Temperature Distributions ◽  
Internal Fluid ◽  
Fuel Evaporation

A line of mono-sized and periodically spaced droplets is moving in the diffusion flame sustained by the droplet fuel evaporation. The temperature field within the droplets is measured using the two-color laser induced fluorescence technique. Experiments are undertaken on droplets made of different fuels including acetone, ethanol, 3-pentanone, n-heptane, n-decane and n-dodecane which have very different volatility and viscosity. A simplified model of the heat transfer within the droplet is developed, taking into account both heat conduction and heat advection by the droplet internal fluid circulation. Streamlines are assumed to follow those of a spherical Hill vortex, the intensity of which can be related to the friction coefficient. Comparisons between the measurements and the simulations reveal that the heat convection within interacting droplets is strongly reduced compared to the model of the isolated droplet.

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.

Study of butterfly inversion of perfluoronaphthalene by laser‐induced fluorescence in supersonic jet

1992 ◽  
Vol 96 (9) ◽  
pp. 6456-6463 ◽  
Author(s):  
Tapas Chakraborty ◽  
Debnarayan Nath ◽  
Mihir Chowdhury
Keyword(s):  
Supersonic Jet ◽  
Laser Induced Fluorescence

Laser-induced fluorescence of dimethylaminobenzoic esters in solution and supersonic jet

1989 ◽  
Vol 163 (4-5) ◽  
pp. 282-290 ◽  
Author(s):  
Rachel Howell ◽  
Anita C. Jones ◽  
Alan G. Taylor ◽  
David Phillips
Keyword(s):  
Supersonic Jet ◽  
Laser Induced Fluorescence
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