Abstract
Theoretical and experimental research on the effects of buoyancy on gas-jet diffusion flames is described in this paper. Part of this research involves an assessment of existing data obtained under reduced-gravity conditions. The results show that uncertainties in our understanding of flame structure exist and further research is required before reliable predictions of ignition, stabilization and propagation of flames under microgravity conditions can be made. Steady-state and transient theories have been developed and used in the analysis of existing drop-tower data and new data obtained from a stationary experiment involving inverted flames. The result of this research has led to the definition of a microgravity experiment to be performed in space.
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