The Instability of Vapor Bubble Growth within the Diesel Droplet under the Condition of Supercavitation

Ming Lv; Zhi Ning; Kai Yan

doi:10.4028/www.scientific.net/AMR.512-515.477

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 512-515The Instability of Vapor Bubble Growth within the...

The Instability of Vapor Bubble Growth within the Diesel Droplet under the Condition of Supercavitation

Abstract:

A new analytical form of dispersion equation which can be used to describe the disturbance growth rate of the diesel bubble growth instability is derived. The instability analysis of vapor bubble growth within the diesel droplet is carried out in this paper. Analysis results show: the disturbance growth rate is majorly influenced by six dimensionless variables. The disturbance growth rate initially decreases gradually then increases rapidly with increasing bubble volume fraction. The disturbance growth rate increases with increasing Weber number of vapor bubble growth, increasing Mach number and increasing diesel droplet Reynolds number. Both vapor bubble Reynolds number and ambient air Reynolds number have slightly influence on disturbance growth rate.

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Periodical:

Advanced Materials Research (Volumes 512-515)

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477-480

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.512-515.477

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Online since:

May 2012

Authors:

Ming Lv, Zhi Ning, Kai Yan

Keywords:

Atomization Mechanism, Diesel Droplet, Dispersion Equation, Linear Instability Analysis, Supercavitation, Vapor Bubbles

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