Evaluation Model for Fast Convective Heat Transfer Characteristics of Thermal Cracked Hydrocarbon Fuel Regenerative Cooling Channel in Hydrocarbon-Fueled Scramjet

Xu, Qing; Lin, Guowei; Li, Haowei

doi:10.1016/j.applthermaleng.2021.117616

Cited by 11 publications

(2 citation statements)

References 26 publications

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“…As a typical propulsion fuel, endothermic hydrocarbon not only has a physical heat sink with latent heat of the vaporization process but also provides a chemical heat sink in its endothermic reaction. In recent years, the heat transfer characteristics of endothermic hydrocarbon fuels has become a focus in the aerospace field (Chen et al, 2016;Xu and Meng 2016;Wang and Pan 2020;Zhang and Sun 2020;Xu et al, 2021). Chen et al (2016) numerically investigated the influence of downstream blockage flow patterns and effects of throttle on temperature distributions and heat transfer.…”

Section: Introductionmentioning

confidence: 99%

“…Xu and Meng, (2016) studied the influence of surface heat flux and inlet fluid velocity on fluid dynamics and heat transfer characteristics of RP-3 at 5 MPa in cooling tubes and revealed that hydrocarbon fuels could improve heat transfer by absorbing heat from endothermic chemical reactions. Xu, Lin, and Li (2021) numerically evaluated flow and heat transfer characteristics of hydrocarbon fuel under both mild and terrible-cracked conditions. The flow and heat transfer characteristics in cooling channels with different lengths and heat fluxes were investigated.…”

Section: Introductionmentioning

confidence: 99%

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Heat transfer and flow structures of supercritical n-decane in a regenerative cooling channel loaded with non-uniform heat flux

Liu

Ma³

et al. 2022

Front. Energy Res.

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A harsh and complex thermal environment in the combustor threatens safe working of scramjets. In this study, heat transfer and flow structures of supercritical n-decane under 3 MPa in a regenerative cooling channel loaded with non-uniform heat flux distributions are investigated, including uniform, sinusoidal, increased, and decreased heat flux distributions. A verified k–ω SST turbulence model was employed, and a corresponding mesh independence study was performed. From this work, the fluid temperature at the outlet of the heated channel is only determined by the averaged heat flux, and all the regenerative cooling channels achieve the same temperature although loaded with different heat flux distributions. Compared with the fluid temperature, the wall temperature distribution is more sensitive to the variations of heat flux distribution. The regenerative cooling channels loaded with the sinusoidal heat flux distributions exist in several high-temperature regions, and the channel loaded with linear distributions changes the trend of temperature distribution. A larger temperature gradient is found in the regenerative cooling channel wall with a lower thermal conductivity. This work provides a good insight into the characteristics of the flow and temperature field of regenerative cooling channels loaded with non-uniform heat flux considering the effect of conjugate heat transfer.

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