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Numerical Analysis of Thermochemical Nonequilibrium Flows in a Model Scramjet Engine

Author

Listed:
  • Seoeum Han

    (Interdisciplinary Program in Space System, Seoul National University, Seoul 08826, Korea)

  • Sangyoon Lee

    (Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 08826, Korea)

  • Bok Jik Lee

    (Institute of Advanced Aerospace Technology, Seoul National University, Seoul 08826, Korea)

Abstract

This numerical study was conducted to investigate the flow properties in a model scramjet configuration of the experiment in the T4 shock tunnel. In most numerical simulations of flows in shock tunnels, the inflow conditions in the test section are determined by assuming the thermal equilibrium of the gas. To define the inflow conditions in the test section, the numerical simulation of the nozzle flow with the given nozzle reservoir conditions from the experiment is conducted by a thermochemical nonequilibrium computational fluid dynamics (CFD) solver. Both two-dimensional (2D) and three-dimensional (3D) numerical simulations of the flow in a model scramjet were conducted without fuel injection. Simulations were performed for two types of inflow conditions: one for thermochemical nonequilibrium states obtained from the present nozzle simulation and the other for the data available using the thermal equilibrium and chemical nonequilibrium assumptions. The four results demonstrate the significance of the modelling approach for choosing between 2D or 3D, and thermal equilibrium or nonequilibrium.

Suggested Citation

  • Seoeum Han & Sangyoon Lee & Bok Jik Lee, 2020. "Numerical Analysis of Thermochemical Nonequilibrium Flows in a Model Scramjet Engine," Energies, MDPI, vol. 13(3), pages 1-17, January.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:3:p:606-:d:314822
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