Evaluation of radiation models for simulation of spherical diffusion flames in microgravity

S. Tang*, M. Chernovsky, H. G. Im, A. Atreya

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review


In this study, the effects of various approximations used in modelling radiation for numerical simulation of transient spherical diffusion flames are investigated by comparison with the experiments. The experiments were performed in the drop tower at NASA-Glenn which provides a 2.2 seconds microgravity time during which the diffusion flame radius and the temperature field were measured as a function of time. Multiple tests were carried out for different fuel and oxidizer dilutions. Ethylene was used as the fuel. For simulation, a one-dimensional spherical diffusion flame model was developed that is capable of both steady and transient calculation. Through the comparison of experimental measurements and transient simulation results, the numerical model was validated. Different radiation models were applied and it was concluded that the statistical narrow band (SNB) combined with discrete ordinates method (DOM) reproduced the experimental results most closely. This study is helpful for better understanding of the interaction between gas radiation and flame extinction under microgravity conditions.

Original languageEnglish (US)
StatePublished - 2007
Event6th Asia-Pacific Conference on Combustion, ASPACC 2007 - Nagoya, Japan
Duration: May 20 2007May 23 2007


Conference6th Asia-Pacific Conference on Combustion, ASPACC 2007

ASJC Scopus subject areas

  • General Chemical Engineering
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Condensed Matter Physics


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