EXPERIMENTAL OBSERVATIONS ON THE DISRUPTIVE BURNING OF UNSUPPORTED DROPLETS SUBJECTED TO HIGHLY CONVECTIVE CONDITIONS.

Loo T. Yap, I. M. Kennedy, F. L. Dryer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Experimental evidence is presented showing the existence of disruptive burning for multi-component fuel droplets and micro-explosive combustion for water in fuel emulsified drops subjected to high relative velocities ranging around 16-19 m/sec. Reynolds numbers, based on high temperature (1200-1400 K) convective freestream conditions and droplet diameter, exceeded 40. Using the 1/3rd averaging rule for evaluating the relevant properties leads to Reynolds numbers exceeding 135. The fuels were a solution of 50 vol. % hexane/50 vol. % hexadecane and respectively 9 vol. % and 18 vol. % water in hexadecane emulsions. The decrease in time from ignition to disruption (with increased relative gas-droplet velocity) in combination with droplet shoulder oriented disruptions support the existence of a toroidal vortex-like structure within the liquid phase.

Original languageEnglish (US)
Title of host publicationWestern States Section, Combustion Institute (Paper)
PublisherCombustion Inst
StatePublished - 1984
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)

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    Yap, L. T., Kennedy, I. M., & Dryer, F. L. (1984). EXPERIMENTAL OBSERVATIONS ON THE DISRUPTIVE BURNING OF UNSUPPORTED DROPLETS SUBJECTED TO HIGHLY CONVECTIVE CONDITIONS. In Western States Section, Combustion Institute (Paper) Combustion Inst.