Liquid Fuel Jet in Crossflow - Comparison between Sharp Edged and Smooth Injection Orifice

Reichel, Jonathan R.; Gopala, Yogish; Lubarsky, Eugene; Bibik, Oleksandr; Zinn, B. T.

doi:10.2514/6.2007-5696

Cited by 2 publications

(1 citation statement)

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“…Although considerable progress has been made regarding droplet size characteristics, some controversy and intriguing findings have emerged. Reichel et al [23] think that the droplet size distribution is layered, and the droplet size is gradually increased with distance from the wall. Miller et al [24] observed that the liquid-gas momentum flux ratio q has less effect on the droplet's Sauter mean diameter (SMD) through digital holographic diagnostic techniques.…”

Section: Introductionmentioning

confidence: 99%

Breakup Processes and Droplet Characteristics of Liquid Jets Injected into Low-Speed Air Crossflow

et al. 2020

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The breakup processes and droplet characteristics of a liquid jet injected into a low-speed air crossflow in the finite space were experimentally investigated. The liquid jet breakup processes were recorded by high-speed photography, and phase-Doppler anemometry (PDA) was employed to measure the droplet sizes and droplet velocities. Through the instantaneous image observation, the liquid jet breakup mode could be divided into bump breakup, arcade breakup and bag breakup modes, and the experimental regime map of primary breakup processes was summarized. The transition boundaries between different breakup modes were found. The gas Weber number (Weg) could be considered as the most sensitive dimensionless parameter for the breakup mode. There was a Weg transition point, and droplet size distribution was able to change from the oblique-I-type to the C-type with an increase in Weg. The liquid jet Weber number (Wej) had little effect on droplet size distribution, and droplet size was in the range of 50–150 μm. If Weg > 7.55, the atomization efficiency would be very considerable. Droplet velocity increased significantly with an increase in Weg of the air crossflow, but the change in droplet velocity was not obvious with the increase in Wej. Weg had a decisive effect on the droplet velocity distribution in the outlet section of test tube.

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Section: Introductionmentioning

confidence: 99%