Experimental study of flame extinction with fuel diffusion combustion inside a wall-opening compartment under reduced ventilation conditions

This paper experimentally study on CH4/ air co-flow diffusion combustion on the upper surface of porous media packed beds. The flame height and flame shape were reconstructed from the upper and the side of the combustor. The influence of the height of the packed bed on the flame height and flame shape is reported. It is shown that the flame height decreases rapidly and the circular diameter increases rapidly with increase the height of the packed beds.

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Experimental study on diffusion combustion of high-speed hydrogen round microjets. Part I: Attach flame in subsonic flow

Journal of Chemical Engineering & Process Technology ◽

10.4172/2157-7048-c2-013 ◽

2018 ◽

Vol 09 ◽

Author(s):

V V Kozlov

Keyword(s):

Experimental Study ◽

High Speed ◽

Subsonic Flow ◽

Diffusion Combustion

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Effectiveness Investigation of Multijet Burner with Different Inlet Gas at Diffusion Combustion

Siberian Journal of Physics ◽

10.54362/1818-7919-2013-8-2-124-127 ◽

2013 ◽

Vol 8 (2) ◽

pp. 124-127

Author(s):

Andrey Shmakov ◽

Anatoliy Chernov ◽

Denis Knyazkov ◽

Oleg Korobeinichev ◽

Viktor Kozlov ◽

...

Keyword(s):

Experimental Study ◽

Diffusion Combustion ◽

Hot Wire ◽

Methane Flame ◽

The Given

The purpose of the given work consists in an experimental study of the efficiency of a multi-jet burner with various of the gas admission at diffusion combustion. For description of the methane flame parameters at the diffusion combustion the hot - wire measurements were carried out. The main studies were carried out in ICKC of the SB RAS and the hot-wire measurements were carried out in ITAM of the SB RAS

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Experimental Study of Diffusion Combustion of High-Speed Hydrogen Round Microjet Efflux from Supersonic Laval Micronozzle

Journal of Engineering Thermophysics ◽

10.1134/s181023282002006x ◽

2020 ◽

Vol 29 (2) ◽

pp. 245-253

Author(s):

V. V. Kozlov ◽

G. R. Grek ◽

M. V. Litvinenko ◽

Yu. A. Litvinenko ◽

A. G. Shmakov

Keyword(s):

Experimental Study ◽

High Speed ◽

Diffusion Combustion

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Different Conditions Of The Round Hydrogen Jets Diffusion Combustion In Air

Siberian Journal of Physics ◽

10.54362/1818-7919-2015-10-2-27-41 ◽

2015 ◽

Vol 10 (2) ◽

pp. 27-41

Author(s):

Andrey Shmakov ◽

Genrich Grek ◽

Viktor Kozlov ◽

Oleg Korobeinichev ◽

Yuriy Litvinenko

Keyword(s):

Experimental Study ◽

Density Gradient ◽

Near Field ◽

Turbulent Flame ◽

Combustion Process ◽

Nozzle Diameter ◽

Turbulent Jet ◽

Diffusion Combustion ◽

Jet Velocity ◽

Spatial Size

The purpose of this work is experimental study of diffusion combustion of the round hydrogen microjets with different nozzle diameter. The new phenomenon is revealed during combustion of a hydrogen microjet, which we have named «bottleneck». The special attention has been given to research of characteristics of the «bottleneck» development and its role during of a hydrogen round microjet combustion. It is shown, that «bottleneck» represents the closed spherical area of the hydrogen with air mixture combustion in a jet near-field. The «bottleneck» area is closed by a powerful density gradient. It is found, that the laminar hydrogen jet in this area overcomes a density gradient of gas, becomes turbulent and combustion process is accompanied both a turbulent jet, and a turbulent flame further downstream evolution. It is shown, that the spatial size of a «bottleneck» decreases with growth of a jet velocity.

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