By Ann R. Karagozian, Luca Cortelezzi, Alfredo Soldati
Fundamental Non-Reactive Jets in Crossflow and different Jet platforms; history on Modeling, Dynamical platforms, and keep watch over; Reactive Jets in Crossflow and Multiphase Jets; managed Jets in Crossflow and keep an eye on through Jet Systems;
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Sustained ignition and buming of the fuel can be assisted by the presence of the rearward-facing step, which can act simultaneously as a flaroeholder, yet the step creates greater flow complexity in the vicinity of the fuel jet exit. In the absence of a rearward-facing step, the reactive fuel jet in crossflow nevertheless allows rnixing, ignition, and sustained combustion, even in supersonic crossflow (McMillin" et al. (1994)). As a consequence of these applications, exaroinations of jets injected normally into compressible crossflow, especially supersonic crossflow, have been ongoing since the 1960s, particularly in connection with serarojet related flows.
W. and Zukoski, E. E. (1966). Further Experiments Conceming Secondary lnjection of Gases into a Supersonic Flow. In AIAA Journal, 4(12), 2216-2218. G. (1971). Effect of Injectant Mo1ecu1ar Weight on Mixing of aNormal Jet in a Mach 4 Airstream. In NASA TN D-6061. , Rogers, R. , and Northam, G. B. (1989). Numerica1 Predictions of a Rearward-Facing-Step Flow in a Supersonic Combustor. In Journal of Propulsion and Power, 5:158-164. Wang, K. S. , Smith, 0. , and Karagozian, A. R. (1995). In-Flight Imaging of Gas Jets Injected into Subsonic and Supersonic Crossflows.
8 macro lens. The frame transfer capability ofthis camera allows each of the two close1y spaced Iaser sheet pulses to be captured in a separate image. This permits the use of a cross-correlation PIV algorithm (Hasse1brink, 1999), which e1irninates directiona1 ambiguity and yie1ds improved reso1ution over sing1e-image autocorrelation techniques. The a1gorithm used here also incorporates iterative interrogation window offset to increase vector yie1d. For the laser-induced fluorescence, acetone is seeded into the jet fluid stream, to approximately 10% by volume.