Experimental Study on the Stabilization Mechanism of Diffusion Flames in a Curved Impinging Spray Combustion Field in a Narrow Region

HVAF (High Velocity Air Flame) flame spraying can generate supersonic high-temperature gas jets, enabling thermal spraying at unprecedented speeds. However, there is a problem with the energy cost of this device. This study focused on combustors that used cheap liquid fuel (kerosene) as the fuel for...

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Autores principales:	Hideo Kawahara, Konosuke Furukawa, Koichiro Ogata, Eiji Mitani, Koji Mitani
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	diffusion flame curved impinging jet combustion narrow region stable combustion temperature fluctuation Technology T
Acceso en línea:	https://doaj.org/article/cd32910d3364473f85b8aca4da356ca8
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spelling	oai:doaj.org-article:cd32910d3364473f85b8aca4da356ca82021-11-11T15:56:56ZExperimental Study on the Stabilization Mechanism of Diffusion Flames in a Curved Impinging Spray Combustion Field in a Narrow Region10.3390/en142171711996-1073https://doaj.org/article/cd32910d3364473f85b8aca4da356ca82021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7171https://doaj.org/toc/1996-1073HVAF (High Velocity Air Flame) flame spraying can generate supersonic high-temperature gas jets, enabling thermal spraying at unprecedented speeds. However, there is a problem with the energy cost of this device. This study focused on combustors that used cheap liquid fuel (kerosene) as the fuel for HVAF. In this research, we have developed a compact combustor with a narrow channel as a heat source for the HVAF heat atomizer. Using this combustor, the stability of the flame formed in the combustor, the morphology of the flame, and the temperature behavior in the combustion chamber were investigated in detail. As a result, the magnitude of the swirling airflow had a great influence on the structure of the flame formed in the combustor, and the stable combustion range of the combustor could be determined. As the swirling air flow rate changes, the equivalent ratio of the entire combustor changes significantly, and the flame structure also transition from the premixed flame to the diffusion flame. From this study, it was confirmed that the temperature inside the combustor has great influence on the flame structure.Hideo KawaharaKonosuke FurukawaKoichiro OgataEiji MitaniKoji MitaniMDPI AGarticlediffusion flamecurved impinging jet combustionnarrow regionstable combustiontemperature fluctuationTechnologyTENEnergies, Vol 14, Iss 7171, p 7171 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	diffusion flame curved impinging jet combustion narrow region stable combustion temperature fluctuation Technology T
spellingShingle	diffusion flame curved impinging jet combustion narrow region stable combustion temperature fluctuation Technology T Hideo Kawahara Konosuke Furukawa Koichiro Ogata Eiji Mitani Koji Mitani Experimental Study on the Stabilization Mechanism of Diffusion Flames in a Curved Impinging Spray Combustion Field in a Narrow Region
description	HVAF (High Velocity Air Flame) flame spraying can generate supersonic high-temperature gas jets, enabling thermal spraying at unprecedented speeds. However, there is a problem with the energy cost of this device. This study focused on combustors that used cheap liquid fuel (kerosene) as the fuel for HVAF. In this research, we have developed a compact combustor with a narrow channel as a heat source for the HVAF heat atomizer. Using this combustor, the stability of the flame formed in the combustor, the morphology of the flame, and the temperature behavior in the combustion chamber were investigated in detail. As a result, the magnitude of the swirling airflow had a great influence on the structure of the flame formed in the combustor, and the stable combustion range of the combustor could be determined. As the swirling air flow rate changes, the equivalent ratio of the entire combustor changes significantly, and the flame structure also transition from the premixed flame to the diffusion flame. From this study, it was confirmed that the temperature inside the combustor has great influence on the flame structure.
format	article
author	Hideo Kawahara Konosuke Furukawa Koichiro Ogata Eiji Mitani Koji Mitani
author_facet	Hideo Kawahara Konosuke Furukawa Koichiro Ogata Eiji Mitani Koji Mitani
author_sort	Hideo Kawahara
title	Experimental Study on the Stabilization Mechanism of Diffusion Flames in a Curved Impinging Spray Combustion Field in a Narrow Region
title_short	Experimental Study on the Stabilization Mechanism of Diffusion Flames in a Curved Impinging Spray Combustion Field in a Narrow Region
title_full	Experimental Study on the Stabilization Mechanism of Diffusion Flames in a Curved Impinging Spray Combustion Field in a Narrow Region
title_fullStr	Experimental Study on the Stabilization Mechanism of Diffusion Flames in a Curved Impinging Spray Combustion Field in a Narrow Region
title_full_unstemmed	Experimental Study on the Stabilization Mechanism of Diffusion Flames in a Curved Impinging Spray Combustion Field in a Narrow Region
title_sort	experimental study on the stabilization mechanism of diffusion flames in a curved impinging spray combustion field in a narrow region
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/cd32910d3364473f85b8aca4da356ca8
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Experimental Study on the Stabilization Mechanism of Diffusion Flames in a Curved Impinging Spray Combustion Field in a Narrow Region

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