Prediction of mean diameter and velocity of droplets in air-assisted hollow-cone injection

Takeshi Miyamoto, Takashi Kobayashi, Yoichiro Matsumoto

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A computational model of air atomization has been developed to predict the size and velocity of fuel droplets near the exit of air-assisted hollow-cone injectors. In this model, stratified two-phase flow in the injectors and breakup of liquid film into small droplets are considered. The model shows that Sauter mean diameter of droplets is proportional to (liquid film thickness)1/3 and (liquid surface tension/dynamic pressure defined by relative velocity between liquid and air)2/3. Droplet size measurements were conducted to determine the proportionality constant for a realistic injector. The effects of operating conditions of the injectors on the droplet size and velocity will be predicted using this model.

Original languageEnglish
Pages (from-to)319-324
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume62
Issue number593
DOIs
Publication statusPublished - 1 Jan 1996

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