Abstract
Effects of droplet interactions on drag, evaporation, and combustion of a planar droplet array oriented perpendicular to the approaching flow are studied numerically. The three-dimensional Navier-Stokes equations, with variable thermophysical properties, are solved using finite-difference techniques. Parameters investigated include the droplet spacing, droplet Reynolds number, approaching stream oxygen concentration, and fuel type. Results are obtained for a Reynolds number range of 5 to 100, droplet spacings from 2 to 24 diameters, oxygen concentrations of 0.1 and 0.2, and methanol and n-butanol fuels. The calculations show that gasification rates of interacting droplets decrease as droplet spacings decrease. The reduction in gasification rates is significant only at small spacings and low Reynolds numbers. The effects of adjacent droplets on drag are shown to be small for the present array orientation.
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