Experimental investigation on the characteristic of jet break-up for butanol droplet impacting onto a heated surface in the film boiling regime
International Journal of Heat and Mass Transfer(2018)
Abstract
•Jet break-up dynamic of bio-butanol droplet impacting onto solid and heated surface in the film boiling regime was studied.•Jet break-up phenomenon only occurs at Weber number around between 14 and 90.•Secondary droplets numbers first increase then decrease with We and reach max. at 65.•Length of jet break-up first increase slowly then decrease rapidly with We and then increase with We.•Time of jet break-up is well agree with the theory of Rayleigh instability.
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Key words
Droplet impacting,Heated surface,Jet break-up,Secondary droplets,Rayleigh instability,Butanol
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