Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
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A Numerical Study on Gas Mixing Time in a Low-Pressure (Driven) Section of a Shock Tube

충격파관 저압실내 가스 혼합시간 예측에 관한 수치해석

  • Wang, YuanGang (Department of Mechanical Engineering, Sejong University) ;
  • Cho, Cheon Hyeon (Department of Mechanical Engineering, Sejong University) ;
  • Sohn, Chae Hoon (Department of Mechanical Engineering, Sejong University) ;
  • Yoon, Youngbin (School of Mechanical and Aerospace Engineering, Seoul National University)
  • Received : 2017.06.12
  • Accepted : 2017.06.20
  • Published : 2017.09.30
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Abstract

The fuel and oxidizer mixing process in the shock tube driven section is simulated numerically. The boundary condition is set based on an shock tube experimental condition. The objective is to predict the gas mixing time for experiments. In the experiment, the amount of fuel to be injected is determined in advance. Then, according to duration of fuel injection, 5 cases with the same fuel mass but different fuel mass flow rate are simulated. After fuel is injected into the driven section, the fuel and air will be mixed with each other through convection and diffusion processes. The mixing time is predicted numerically for experiments.

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