Thermal cracking and coke deposition characteristics of aviation kerosene RP-3 in an S-bend tube

Wang, Renting; Zhao, Junliang; Bao, Zewei

doi:10.1016/j.fuel.2021.122673

Cited by 23 publications

(1 citation statement)

References 32 publications

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“…In recent years, the pyrolysis effect of aviation kerosene has been closely followed. However, most investigations laid stress on the heat and mass transfer of kerosene in horizontal tubes, vertical tubes, or serpentine tubes, − which is rarely concerned with the most common rectangular channel. To the best of our knowledge, the inclination of the rectangular channel has also received little attention, and the effect of inclination on kerosene thermal behavior has not been figured out.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of the Thermal Behavior of Cracked RP-3 in Rectangular Cooling Channels under Different Inclinations

Jiang

et al. 2022

ACS Omega

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The pyrolysis effect of aviation kerosene is common in the regenerative cooling process of hypersonic aircraft scramjets. To find out the effect of inclination variation on the characteristics of aviation kerosene RP-3 considering thermal cracking in a regenerative cooling rectangular channel, a detailed chemical mechanism of RP-3 pyrolysis is introduced to construct a numerical model. The results indicate that the pyrolytic reaction begins at the junction of the heating wall and the side walls, and the main products of pyrolysis are light olefins and alkanes. The thermal cracking reaction slows down the velocity of the main flow on account of the increased density and increased viscosity resulting from the decrease in RP-3 temperature. With the decrease in inclination, thermal cracking is enhanced and the average heat transfer coefficient is decreased, which leads to an increase in wall temperature.

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