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A phenomenological droplet impact model for Lagrangian spray transport

  • National Institute of Standards and Technologies
  • Wright-Patterson AFB

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

The overall objective of this research is to gain fundamental knowledge of fire-suppression agent transport in the cluttered environments of aircraft engine nacelles (i.e., hydraulic and electrical lines, mounting brackets, etc.). A new generation of Halon replacements includes chemical suppressants with high boiling-points that will exist in a liquid phase at discharge. The release of these agents in confiied spaces may result in the impact of droplets with nearby solid surfaces and inhibit the effectiveness of the agent. The focus of the current effort is to develop a model to account for these effects in a Lagrangian modeling framework for spray transport. The impact model is formulated using mass and energy conservation principles along with established empirical correlations for breakup of individual droplets. Results are presented for 1 mm diameter HFE-7100 liquid droplets impacting into a circular cylinder for several velocities spanning the impact regimes of droplet adhesion, bouncing and breakup.

Original languageEnglish
Title of host publication41st Aerospace Sciences Meeting and Exhibit
StatePublished - 2003
Event41st Aerospace Sciences Meeting and Exhibit 2003 - Reno, NV, United States
Duration: Jan 6 2003Jan 9 2003

Publication series

Name41st Aerospace Sciences Meeting and Exhibit

Conference

Conference41st Aerospace Sciences Meeting and Exhibit 2003
Country/TerritoryUnited States
CityReno, NV
Period01/6/0301/9/03

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