Microgravity burner-generated spherical diffusion flames: Experiment and computation

S. D. Tse, D. L. Zhu, C. J. Sung, Chung King Law

Research output: Contribution to conferencePaper

3 Scopus citations

Abstract

Experiments were conducted in the 2.2-s drop-tower facility at the NASA Lewis Research Center to study the transient response of burner-generated spherical diffusion flames, maintained by constant fuel-mass-flow rates, due to initial displacements of the flames from their steady-state positions. The experimental results on the flame trajectory were found to agree well with those obtained through fully-transient computational simulation with detailed chemistry and transport, and appropriate initial conditions. Both experiments and computations indicate that steady-state flame behavior cannot be reached within the 2.2-s microgravity duration, for the fuels and mass-flow rates tested. Furthermore, it is demonstrated that the diverse set of experimental data obtained for different fuel mixtures and mass flow rates for the transient flame expansion process can be approximately correlated based on an effective equidiffusive system with infinitely fast chemistry. The lack of correspondence between the visible flame luminosity and flame strength is noted.

Original languageEnglish (US)
StatePublished - Jan 1 1999
Event37th Aerospace Sciences Meeting and Exhibit, 1999 - Reno, United States
Duration: Jan 11 1999Jan 14 1999

Other

Other37th Aerospace Sciences Meeting and Exhibit, 1999
CountryUnited States
CityReno
Period1/11/991/14/99

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Aerospace Engineering

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    Tse, S. D., Zhu, D. L., Sung, C. J., & Law, C. K. (1999). Microgravity burner-generated spherical diffusion flames: Experiment and computation. Paper presented at 37th Aerospace Sciences Meeting and Exhibit, 1999, Reno, United States.