CORRELATIONS FOR SOOT AND SMOKE-POINT IN MOMENTUM CONTROLLED LUMINOUS LAMINAR JET DIFFUSION FLAMES (in space)

ABSTRACT Simple correlations for flame envelop and soot production are developed for non-buoyant laminar jet flames in microgravity (space). First, the characteristics of the flow field and flame envelop(height and width) are expressed in terms of input parameters both for high momentum( parabolic flow ) and low momentum ( elliptic flow) jet flames. Soot formation rate relations are extended from previous work on buoyant laminar smoke-point flames and used for the present nonbuoyant jet flames. Together with the flow characteristics, they provide predictions of soot concentration and smoke-point flame development in microgravity. These predictions are substantiated and verified by using recent experiments in space for flame shapes and soot in nonbuoyant luminous Hydrocarbon / Air jet flames