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A Parametrical Study on Convective Heat Transfer between High-Temperature Gas and Regenerative Cooling Panel

Author

Listed:
  • Jiangyu Hu

    (College of Aerospace Science, National University of Defense Technology, Changsha 410073, China)

  • Ning Wang

    (College of Aerospace Science, National University of Defense Technology, Changsha 410073, China)

  • Jin Zhou

    (College of Aerospace Science, National University of Defense Technology, Changsha 410073, China)

  • Yu Pan

    (College of Aerospace Science, National University of Defense Technology, Changsha 410073, China)

Abstract

Thermal protection is still one of the key challenges for successful scramjet operations. In this study, the three-dimensional coupled heat transfer between high-temperature gas and regenerative cooling panel with kerosene of supercritical pressure flowing in the cooling channels was numerically investigated to reveal the fundamental characteristics of regenerative cooling as well as its influencing factors. The SST k-ω turbulence model with low-Reynolds-number correction provided by the pressure-based solver of Fluent 19.2 is adopted for simulation. It was found that the heat flux of the gas heated surface is in the order of 10 6 W/m 2 , and it declines along the flow direction of gas due to the development of boundary layer. Compared with cocurrent flow, the temperature peak of the gas heated surface in counter flow is much higher. The temperature and heat flux of the gas heated surface both rises with the static pressure and total temperature of gas. The heat flux of the gas heated surface increases with the mass flow rate of kerosene, and it hardly changes with the pressure of kerosene. Results herein could help to understand the real heat transfer process of regenerative cooling and guide the design of thermal protection systems.

Suggested Citation

  • Jiangyu Hu & Ning Wang & Jin Zhou & Yu Pan, 2021. "A Parametrical Study on Convective Heat Transfer between High-Temperature Gas and Regenerative Cooling Panel," Energies, MDPI, vol. 14(6), pages 1-19, March.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:6:p:1784-:d:522843
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    References listed on IDEAS

    as
    1. Bohuslav Kilkovský, 2020. "Review of Design and Modeling of Regenerative Heat Exchangers," Energies, MDPI, vol. 13(3), pages 1-27, February.
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