Mixing control by wall flush-mount injectors in dual-mode combustor

S. Tomioka, M. Izumikawa, N. Sakuranaka, H. Shibata, H. Yamasaki, T. Kobayashi, A. Matsuo

Research output: Contribution to conferencePaper

Abstract

Interaction between the fuel-jet / cross-flow mixing and a pseudo-shock system was experimentally investigated to evaluate the possibility of mixing control by wall flushmount injector configuration during a dual-mode operation. The fuel-jet was simulated by inert helium injection, and the pseudo-shock wave system was generated by backpressurizing a Mach 2.5 airflow with a mechanical valve. Three difference injection schemes, perpendicular injection through a circular orifice, perpendicular injection through a stinger-shaped orifice, and angled injection through a circular orifice, were employed, and changes in mixing characteristics due to interaction with the pseudoshock system were investigated. Interaction with the pseudo-shock system resulted in suppression of plume core penetration, enhancement of injectant diffusion especially in spanwise direction, and elimination of stinger-shaped orifice's superiority over the circular orifice in perpendicular case. The swept-back injection resulted in a slow mixing in near field and fast mixing in far field, so that combination with the perpendicular injection might make mixing control feasible.

Original languageEnglish
Publication statusPublished - 2010 Dec 1
Event46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit - Nashville, TN, United States
Duration: 2010 Jul 252010 Jul 28

Other

Other46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
CountryUnited States
CityNashville, TN
Period10/7/2510/7/28

ASJC Scopus subject areas

  • Aerospace Engineering
  • Control and Systems Engineering

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    Tomioka, S., Izumikawa, M., Sakuranaka, N., Shibata, H., Yamasaki, H., Kobayashi, T., & Matsuo, A. (2010). Mixing control by wall flush-mount injectors in dual-mode combustor. Paper presented at 46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Nashville, TN, United States.