A computational and experimental study of transient spherical diffusion flames in microgravity

M. K. Chernovsky, S. Tang, Hong Im, A. Atreya

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

Abstract

This work compares transient measurements of flame growth and temperature field with a one-dimensional numerical model of an expanding spherical diffusion flame in microgravity. The purpose of this work is to study fundamental characteristics of flame extinction induced by gas radiation. In particular, the effects of various diluents with different radiative properties on the flame quenching mechanism are investigated. Experiments were conducted at atmospheric pressure using a porous spherical burner aerodynamically supporting an ethylene diffusion flame in an oxidizing atmosphere. A color CCD camera was used for visual observations and to obtain the flame growth rate. Temperature field was measured by an array of thermocouples that were corrected for heat transfer. The numerical model is based on a finite difference method in onedimensional spherical coordinates for steady and unsteady flames with consideration of detailed chemistry and transport properties. This work is a step toward the development and validation of a numerical model to understand the interaction between flame radiation and chemistry especially at extinction of microgravity diffusion flames.

Original languageEnglish (US)
Title of host publicationChemical and Physical Processes of Combustion - 2005 Technical Meeting of the Eastern States Section of the Combustion Institute
PublisherCombustion Institute
Pages169-172
Number of pages4
ISBN (Electronic)9781604235067
StatePublished - Jan 1 2005
Event2005 Technical Meeting of the Eastern States Section of the Combustion Institute: Chemical and Physical Processes of Combustion - Orlando, United States
Duration: Nov 13 2005Nov 15 2005

Publication series

NameChemical and Physical Processes of Combustion - 2005 Technical Meeting of the Eastern States Section of the Combustion Institute

Other

Other2005 Technical Meeting of the Eastern States Section of the Combustion Institute: Chemical and Physical Processes of Combustion
CountryUnited States
CityOrlando
Period11/13/0511/15/05

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Mechanical Engineering

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