Experimental Study of Self-Oscillations Developing in a Swirling-Jet Flow

2004 ◽  
Vol 39 (3) ◽  
pp. 406-413 ◽  
Author(s):  
D. G. Akhmetov ◽  
V. V. Nikulin ◽  
V. M. Petrov
Keyword(s):  
Experimental Study ◽  
Jet Flow ◽  
Swirling Jet

ON IMPACT OF LARGE-SCALE VORTEX STRUCTURES ON FLAME SHAPE IN A SWIRLING JET FLOW

2018 ◽  
Vol 11 (2) ◽  
pp. 31-39
Author(s):  
L. М. Chikishev ◽  
◽  
V. М. Dulin ◽  
A. S. Lobasov ◽  
D. М. Markovich ◽  
...  
Keyword(s):  
Large Scale ◽  
Jet Flow ◽  
Vortex Structures ◽  
Swirling Jet ◽  
Large Scale Vortex ◽  
Flame Shape

An experimental study of suddenly expanded rectangular jet flow field

1991 ◽  
Vol 18 (1) ◽  
pp. 1-9
Author(s):  
E. Rathakrishnan ◽  
T.J. Ignatius ◽  
Channa Raju
Keyword(s):  
Experimental Study ◽  
Flow Field ◽  
Jet Flow ◽  
Rectangular Jet

scholarly journals Experimental Study of the Jet Engine Exhaust Flow Field of Aircraft and Blast Fences

2015 ◽  
Vol 27 (2) ◽  
pp. 181-190 ◽  
Author(s):  
Haifu Wang ◽  
Liangcai Cai ◽  
Xiaolei Chong ◽  
Hao Geng
Keyword(s):  
Experimental Study ◽  
Flow Field ◽  
Wind Velocity ◽  
Maximum Rate ◽  
Dynamic Pressure ◽  
Jet Flow ◽  
Engine Exhaust ◽  
Jet Engine ◽  
Jet Nozzle

A combined blast fence is introduced in this paper to improve the solid blast fences and louvered ones. Experiments of the jet engine exhaust flow (hereinafter jet flow for short) field and tests of three kinds of blast fences in two positions were carried out. The results show that the pressure and temperature at the centre of the jet flow decrease gradually as the flow moves farther away from the nozzle. The pressure falls fast with the maximum rate of 41.7%. The dynamic pressure 150 m away from the nozzle could reach 58.8 Pa, with a corresponding wind velocity of 10 m/s. The temperature affected range of 40°C is 113.5×20 m. The combined blast fence not only reduces the pressure of the flow in front of it but also solves the problems that the turbulence is too strong behind the solid blast fences and the pressure is too high behind the louvered blast fences. And the pressure behind combined blast fence is less than 10 Pa. The height of the fence is related to the distance from the jet nozzle. The nearer the fence is to the nozzle, the higher it is. When it is farther from the nozzle, its height can be lowered.

scholarly journals An Experimental Study of the Mixing by an Acoustically Pulsed Axisymmetrical Air-Jet

1985 ◽  
Author(s):  
P. J. Vermeulen ◽  
Wai Keung Yu
Keyword(s):  
Experimental Study ◽  
Temperature Profile ◽  
Strouhal Number ◽  
Jet Flow ◽  
Velocity Pulsation ◽  
Entrainment Rate ◽  
Air Jet ◽  
Toroidal Vortices

The mixing by an acoustically pulsed axisymmetrical air-jet, flowing into the atmosphere, has been studied by means of velocity and temperature profile measurements. The strength of the velocity pulsation imparted to the jet flow and of the associated toroidal vortices were also measured. The entrainment rate was increased by up to two times, with the majority of the extra entrainment occurring over the first five diameters downstream of the jet orifice, where toroidal vortices are formed and attain their greatest strength. The jet response depends on Strouhal number and appears to be optimum at about 0.25. The response starts to saturate at the limit of pulsation strength used.

Spatial Structure of a Reacting Turbulent Swirling Jet Flow with Combustion of a Propane–Air Mixture

2018 ◽  
Vol 54 (3) ◽  
pp. 294-300
Author(s):  
D. K. Sharaborin ◽  
D. M. Markovich ◽  
V. M. Dulin
Keyword(s):  
Spatial Structure ◽  
Jet Flow ◽  
Swirling Jet
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