Combustion of hydrogen in round and plane microjets in transverse acoustic field at small Reynolds numbers as compared to propane combustion in the same conditions (Part I)

2016 ◽  
Vol 41 (44) ◽  
pp. 20231-20239 ◽  
Author(s):  
V.V. Kozlov ◽  
G.R. Grek ◽  
O.P. Korobeinichev ◽  
Yu.A. Litvinenko ◽  
A.G. Shmakov
Keyword(s):  
Acoustic Field ◽  
Reynolds Numbers ◽  
Propane Combustion ◽  
Transverse Acoustic ◽  
Small Reynolds Numbers ◽  
Combustion Of Hydrogen

FEATURES OF PROPANE COMBUSTION IN ROUND AND PLANE MACRO - AND MICROJET IN THE TRANSVERSE ACOUSTIC FIELD AT SMALL REYNOLDS NUMBERS

2013 ◽  
Vol 3 (2) ◽  
Author(s):  
Genrich R. Grek ◽  
Mikhail M. Katasonov ◽  
Victor V. Kozlov ◽  
Oleg P. Korobeinichev ◽  
Yury A. Litvinenko ◽  
...  
Keyword(s):  
Acoustic Field ◽  
Reynolds Numbers ◽  
Propane Combustion ◽  
Transverse Acoustic ◽  
Small Reynolds Numbers

The Features of Hydrogen Combustion in Round and Plane Microjet in the Transverse Acoustic Field, and Comparison with the Results Propane Combustion

2014 ◽  
Vol 9 (1) ◽  
pp. 79-86
Author(s):  
Viktor Kozlov ◽  
Genrich Grek ◽  
Oleg Korobeinichev ◽  
Yuriy Litvinenko ◽  
Andrey Shmakov
Keyword(s):  
Acoustic Field ◽  
Experimental Studies ◽  
Reynolds Numbers ◽  
Hydrogen Combustion ◽  
Diffusion Combustion ◽  
Propane Combustion ◽  
Experimental Conditions ◽  
Transverse Acoustic ◽  
Plane Jets ◽  
Oscillation Process

Experimental studies of the hydrogen combustion in the round and plane microjet in cross acoustic field at low Reynolds numbers are presented. The results are compared with the results obtained during the combustion of propane, studied earlier in the same experimental conditions. It is shown that the lifted flame of propane at diffusion combustion in a round microjet, under the influence of a transverse acoustic field, subject to bifurcation. This phenomenon is associated with the development of a sinusoidal oscillation process occurring under the influence of a transverse acoustic field. For the case of hydrogen combustion of plane microjet to lift the flame also failed, but the bifurcation effect is manifested at velocity close to 450 m/s. In this case acoustic disturbances generated by the jet, and a sinusoidal instability is typical for the plane jets

The flame structure in round and plane propane microjet combustion in a transverse acoustic field at low Reynolds numbers

2014 ◽  
Vol 59 (12) ◽  
pp. 596-600 ◽  
Author(s):  
V. V. Kozlov ◽  
G. R. Grek ◽  
M. M. Katasonov ◽  
O. P. Korobeinichev ◽  
Yu. A. Litvinenko ◽  
...  
Keyword(s):  
Acoustic Field ◽  
Flame Structure ◽  
Reynolds Numbers ◽  
Low Reynolds Numbers ◽  
Transverse Acoustic ◽  
Low Reynolds

Features of the Propane Combustion in the Round and Plane Macro- and Micro-Jet in a Transverse Acoustic Field at the Small Reynolds Number

2013 ◽  
Vol 8 (3) ◽  
pp. 98-120
Author(s):  
Genrich Grek ◽  
Mikhail Katasonov ◽  
Viktor Kozlov ◽  
Oleg Korobeinichev ◽  
Yuriy Litvinenko ◽  
...  
Keyword(s):  
Reynolds Number ◽  
Velocity Profile ◽  
Acoustic Field ◽  
Experimental Studies ◽  
Small Reynolds Number ◽  
Propane Combustion ◽  
Mean Velocity ◽  
Transverse Acoustic ◽  
New Phenomena ◽  
The Given

Results of experimental studies on round and plane macro- and micro-jets with top-hat and parabolic mean velocity profile at the nozzle exit subjected to transverse acoustic field at small Reynolds number are presented in this review. Features of their evolution in the given conditions are shown. On the basis of the received knowledge the new phenomena uncovered at study of the flame evolution in a transverse acoustic field by the propane round and plane micro-jet combustion are revealed and explained

Pulsatile pipe flow pseudoplastic materials; The flow enhancement for Re ≪ 1

1983 ◽  
Vol 48 (6) ◽  
pp. 1579-1587 ◽  
Author(s):  
Ondřej Wein
Keyword(s):  
Small Parameter ◽  
Pipe Flow ◽  
Quantitative Estimation ◽  
Reynolds Numbers ◽  
Power Law Model ◽  
Viscosity Function ◽  
Small Reynolds Numbers ◽  
Title Problem ◽  
Flow Enhancement ◽  
Method Of Small Parameter

Solution of the title problem for the power-law model of viscosity function is constructed by the method of small parameter in the region of small Reynolds numbers. The main result of the paper is a quantitative estimation of the values of Re, when the influence of inertia on flow enhancement may be quite neglected.

scholarly journals Force distribution on a slender body close to an interface

1981 ◽  
Vol 24 (1) ◽  
pp. 27-36 ◽  
Author(s):  
J.R. Blake ◽  
G.R. Fulford
Keyword(s):  
Reynolds Numbers ◽  
Plane Wall ◽  
Slender Body ◽  
Force Distribution ◽  
Immiscible Liquids ◽  
Flat Interface ◽  
Small Reynolds Numbers ◽  
Rigid Plane ◽  
Limiting Case ◽  
Analytical Expressions

The motion of a slender body parallel and very close to a flat interface which separates two immiscible liquids of differing density and viscosity is considered for very small Reynolds numbers. Approximate analytical expressions are obtained for the distribution of forces acting on the slender body. The limiting case of a rigid plane wall yields results obtained previously.

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