Dynamics of Droplet Collision and Flamefront Motion

Abstract

The present program aims to study the dynamics of droplet collision and flame-flow interaction that are of relevance to liquid-fueled turbulent combustion in propulsive devices. During the reporting period three classes of phenomena were investigated, namely: (1) The dynamics of binary droplet collision, especially on the criterion for the breaking of the inter-droplet surfaces which enables droplet merging. (2) The dynamics of droplet-film collision, especially on the influence of the film thickness in effecting droplet bouncing versus absorption. (3) The dynamics of droplet-droplet collision of dissimilar liquids, showing that the initiation of droplet internal superheating and hence microexplosion can be greatly facilitated by the presence of air bubbles entrained upon coalescence of the colliding droplets.

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Document Details

Document Type
Technical Report
Publication Date
Nov 20, 2004
Accession Number
ADA428393

Entities

People

  • Chung K. Law

Organizations

  • Princeton University

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Absorption
  • Air Force
  • Alkanes
  • Boiling Point
  • Chemical Reactions
  • Coalescence
  • Collisions
  • Combustion
  • Continuum Mechanics
  • Dynamics
  • Explosions
  • Films
  • Geometry
  • Simulations
  • Superheating
  • Thickness
  • Van Der Waals Forces

Readers

  • Atmospheric Remote Sensing.
  • Combustion science or combustion engineering.
  • Theoretical Analysis.