TY - GEN
T1 - On cross-flow mixing parameters in presence of pseudo-shock wave system
AU - Tomioka, S.
AU - Sakuranaka, N.
AU - Nagatomi, F.
AU - Ohkoshi, M.
AU - Kobayashi, T.
AU - Matsuo, A.
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2011
Y1 - 2011
N2 - Effects of design parameters on fuel-jet / airflow mixing in presence of pseudo-shock system were experimentally investigated. The fuel-jet was simulated by inert helium injection, and the pseudo-shock wave system was generated in a duct by backpressurizing Mach 2.5 airflow with a mechanical valve. Cross-sectional aspect ratio of the duct, injection conditions such as orifice diameter and injection pressure, and pseudo-shock wave location with respect to the injector location were varied. Crosssectional aspect ratio had sizable effects on mixing characteristics through interaction of injectant plume with wall and/or boundary (i.e., neighboring jet). Injectant mass flow rate was dominant among other injection parameters, and a length scale taking mass flow rate into account was found to be effective to summarize mixing data. Location of the pseudo-shock wave system had sizable effects on mixing characteristics even the shock train itself was terminated at the injector location, and better mixing was attained for closer location.
AB - Effects of design parameters on fuel-jet / airflow mixing in presence of pseudo-shock system were experimentally investigated. The fuel-jet was simulated by inert helium injection, and the pseudo-shock wave system was generated in a duct by backpressurizing Mach 2.5 airflow with a mechanical valve. Cross-sectional aspect ratio of the duct, injection conditions such as orifice diameter and injection pressure, and pseudo-shock wave location with respect to the injector location were varied. Crosssectional aspect ratio had sizable effects on mixing characteristics through interaction of injectant plume with wall and/or boundary (i.e., neighboring jet). Injectant mass flow rate was dominant among other injection parameters, and a length scale taking mass flow rate into account was found to be effective to summarize mixing data. Location of the pseudo-shock wave system had sizable effects on mixing characteristics even the shock train itself was terminated at the injector location, and better mixing was attained for closer location.
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U2 - 10.2514/6.2011-5765
DO - 10.2514/6.2011-5765
M3 - Conference contribution
AN - SCOPUS:85088339875
SN - 9781600869495
T3 - 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011
BT - 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011
PB - American Institute of Aeronautics and Astronautics Inc.
T2 - 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011
Y2 - 31 July 2011 through 3 August 2011
ER -