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

Jiangyu Hu, Ning Wang, Jin Zhou and Yu Pan
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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

Energies, 2021, vol. 14, issue 6, 1-19

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.

Keywords: thermal protection; regenerative cooling panel; supercritical pressure; coupled heat transfer (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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