Abstract
A homogeneous spray burner was developed to perform fundamental study on partially-prevaporized spray combustion. Laminar stream of homogeneous spray was generated by the condensation method using rapid expansion of saturated ethanol vapor-air mixtures. Microgravity condensations were employed to prevent large fuel droplets from falling down. Flat flame of homogeneous fuel sprays was stabilized successfully between a nozzle exit of the burner and a stagnation plate under normal and microgravity conditions. Very thick flames were observed for spray streams which include large fuel droplets. It was found that burning velocity of homogeneous spray is larger than that of premixtures of the same total equivalence ratio in stretched flow fields.
