Thermal sensing of fireball plumes

Reza Toossi

doi:10.1117/12.46450

1 March 1991 Thermal sensing of fireball plumes

Reza Toossi

Proceedings Volume 1467, Thermosense XIII; (1991) https://doi.org/10.1117/12.46450
Event: Orlando '91, 1991, Orlando, FL, United States

Abstract

An algorithm has been developed to reconstruct the internal temperature distribution within a rising buoyant thermal from measurements of the radiances by an infrared imaging camera. The technique is applied to detonation of a stoichiometric mixture of methane and oxygen contained in a three-meter diameter mylar balloon. The temperature-time histories of the evolving fireball showed torus formation, followed by rapid cooling from entrained ambient air. Comparison of the temperature distribution with results of an Eulerian hydrodynamic computer code shows good agreement except at the center of the fireball. A possible explanation might be the lack of an entrainment mechanism in the hydrocode.

Citation Download Citation

Reza Toossi "Thermal sensing of fireball plumes", Proc. SPIE 1467, Thermosense XIII, (1 March 1991); https://doi.org/10.1117/12.46450

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