RT Journal Article ID 4b869a9359acc66b A1 Elbadawy, I. A1 Gaskell, P. H. A1 Lawes, Malcolm A1 Thompson, H. M. T1 THE EFFECT OF INITIAL AMBIENT TURBULENCE LEVELS ON ISO-OCTANE INJECTION SPRAYS JF Atomization and Sprays JO AAS YR 2011 FD 2012-04-04 VO 21 IS 10 SP 799 OP 817 K1 gasoline direct injection K1 fuel sprays K1 turbulence AB Iso-octane, injected at high pressure into ambient nitrogen with different prescribed nearly isotropic turbulence levels, characterized by the root-mean-square (RMS) turbulence velocity, is explored experimentally. Mie scatter laser sheet and Schlieren techniques are combined with a high-speed camera to capture images of the vapor and liquid phases simultaneously as a function of injection pressure and ambient turbulence level. These indicate that the latter has a significant influence on tip penetration length, penetration width, cross-sectional area, and velocity. Increased initial ambient turbulence levels lead to reductions in the penetration length in the axial direction and increases in the penetration width in the radial direction; it is also shown to improve fuel evaporation and mixing. PB Begell House LK https://www.dl.begellhouse.com/journals/6a7c7e10642258cc,6adb91a553897bc0,4b869a9359acc66b.html