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Applied Mathematics and Mechanics

, Volume 22, Issue 4, pp 468–477 | Cite as

Numerical Studies on the Mixing of CH4 and Kerosene Injected into a Supersonic Flow with H2 Pilot Injection

  • Sheng-li Xu
  • Peng-tao Yue
  • Zhao-yuan Han
Article
  • 37 Downloads

Abstract

Two-fluid model and divisional computation techniques were used. The multi-species gas fully N-S equations were solved by upwind TVD scheme. Liquid phase equations were solved by NND scheme. The phases-interaction ODE equations were solved by 2nd Runge-Kutta approach. The favorable agreement is obtained between computational results and PLIF experimental results of iodized air injected into a supersonic flow. Then, the numerical studies were carried out on the mixing of CH4and kerosene injected into a supersonic flow with H2pilot injection. The results indicate that the penetration of kerosene approaches maximum when it is injected from the second injector. But the kerosene is less diffused compared with the gas fuels. The free droplet region appears in the flow field. The mixing mechanism of CH4with H2pilot injection is different from that of kerosene. In the staged duct, H2can be entrained into both recirculation zones produced by the step and injectors. But CH4can only be carried into the recirculation between the injectors. Therefore, initiations of H2and CH4can occur in those regions. The staged duct is better in enhancing mixing and initiation with H2pilot flame.

hydrocarbon fuels supersonic flow supersonic combustion numerical simulation 

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Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • Sheng-li Xu
    • 1
  • Peng-tao Yue
    • 1
  • Zhao-yuan Han
    • 1
  1. 1.Department of Modern MechanicsUniversity of Science and Technology of ChinaHefeiP R China

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