Breakup of Turbulent Round Liquid Jets in Uniform Gaseous Crossflow

An experimental investigation of breakup of partially and fully turbulent round liquid jets in uniform gaseous crossflow was undertaken. Measurements of the properties of primary breakup were obtained using pulsed shadowgraphy.Test conditions included various liquids (water, ethyl alcohol, and glycerol), nozzle with large length/diameter ratios (L/d > 40), liquid jet exit diameter of 2 mm, crossflow Weber numbers of 0-180, liquid/gas momentum ratios of 5-55,000, liquid jet Ohnesorge numbers of 0.002-0.014, and jet Reynolds number of 2000-140,000 in uniform crossflow typical of afterburners in jet engines. Measurements included developing a breakup regime map, conditions required for the onset of breakup, ligament properties along the liquid surface, drop size after primary breakup along the liquid surface, conditions required for breakup of the liquid jet as a whole, and liquid jet trajectories. Phenomenological analyses were used to interpret and correlate the new measurements.Mechanical & Aerospace Engineerin

Breakup of Turbulent and Non-Turbulent Liquid jets in Gaseous Crossflows

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76872/1/AIAA-2006-1517-140.pd