A Study of White Smoke Generation and Its Numerical Simulation

Abstract

A mechanism of white smoke generation is clarijied by a visualization technique using high-speed photography. The adhered fuel spray on the wall ojthe cavity, the fuel in the lean mixture region, the spilled fuel from the combustion cuvity and the,fuel,from the sac volume of the nozzle tip are converted to the white smoke late in the expansion stroke. Numerical simulation is also conducted and its results coincide well with experimental results. DO0492