On cross-flow mixing parameters in presence of pseudo-shock wave system

S. Tomioka, N. Sakuranaka, F. Nagatomi, M. Ohkoshi, T. Kobayashi, A. Matsuo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publication47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781600869495
DOIs
Publication statusPublished - 2011
Event47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011 - San Diego, CA, United States
Duration: 2011 Jul 312011 Aug 3

Publication series

Name47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011

Other

Other47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011
CountryUnited States
CitySan Diego, CA
Period11/7/3111/8/3

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Aerospace Engineering
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering

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    Tomioka, S., Sakuranaka, N., Nagatomi, F., Ohkoshi, M., Kobayashi, T., & Matsuo, A. (2011). On cross-flow mixing parameters in presence of pseudo-shock wave system. In 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011 (47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011). American Institute of Aeronautics and Astronautics Inc.. https://doi.org/10.2514/6.2011-5765