Study on spray combustion characteristics of a high intensity swirl combustor (1st report, Combustion characteristics of kerosene spray)

Hirai, Tetsuro; Nagai, Nobuki; Koseki, Hidenori; Kato, Keizo; Takado, Junji

doi:10.1299/kikaib.51.1077

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“…In order to analyze these results, they used flow visualization by spark tracing method for clearing flow patterns, five-hole pitot-tube, and LDA (Laser Doppler Anemometer) system for measuring three time-mean velocities and turbulent characteristics respectively when the swirling numbers change from zero to 1.35 by an axial flow type swirler. Hirai et al (1988) experimentally investigated the combustion characteristics capable of producing high combustion intensity and low environmental pollution to reduce NO x emission from the burning of fine fuel spray formed by the twinfluid atomizer that is generally utilized for an industrial boiler or furnace etc. They clarified that NO x emission was affected by combustion states, burnt gas temperature and O 2 concentrations.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the three-dimensional turbulent flow fields of the gas swirl burner with a cone type baffle plate (I)

Kim¹

2001

KSME International Journal

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This paper presents vector fields, three dimensional mean velocities, turbulent intensities, turbulent kinetic energy and Reynolds shear stresses measured in the X-Y plane of the gas swirl burner with a cone type baffie plate by using an Xi-type hot-wire probe. This experiment is carried out at the flow rates of 350 and 450 .t/min which are equivalent to the combustion air flow rate necessary to release 15,000 kcaljhr in a gas furnace. The results show that the maximum axial mean velocity component exists around the narrow slits situated radially on the edge of a burner. Therefore, there is some entrainment of ambient air in the outer region of a burner. The maximum values of turbulent intensities occur around the narrow slits and in front of a burner up to X/R= 1.5. Moreover, the turbulent intensity components show a relatively large value in the inner region due to the flow diffusion and mixing processes between the inclined baffie plate and the swirl vane. Consequently, the combustion reaction is expected to occur actively near these regions.

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Section: Introductionmentioning

confidence: 99%

Investigation of the three-dimensional turbulent flow fields of the gas swirl burner with a cone type baffle plate (I)

Kim¹

2001

KSME International Journal

View full text Add to dashboard Cite

show abstract

Study on spray combustion characteristics of a high intensity swirl combustor (1st report, Combustion characteristics of kerosene spray)

Cited by 1 publication

References 0 publications

Investigation of the three-dimensional turbulent flow fields of the gas swirl burner with a cone type baffle plate (I)

Investigation of the three-dimensional turbulent flow fields of the gas swirl burner with a cone type baffle plate (I)

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