Influences of pressure on reduced-gravity combustion of 1-propanol droplets

Reduced-gravity experiments on combustion of individual 1-propanol droplets with initial diameters of about 1 mm were conducted in air at standard temperature and with pressures ranging from 0.1 MPa to 1.0 MPa. Flames at 0.1 MPa were non-sooting with blue coloring during most of the combustion process. At higher pressures, flames exhibited significant amounts of soot during most of the combustion history. Flames were also non-spherical at...