Experimental study of flow distribution for aviation kerosene in parallel helical tubes under supercritical pressure

Fu, Yanchen; Tao, Zhi; Xu, Guoqiang; Deng, Hongwu; Jia, Zhouxia

doi:10.1016/j.applthermaleng.2015.06.082

Cited by 26 publications

(2 citation statements)

References 41 publications

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“…Numerous studies have been conducted on the steady flow and heat transfer characteristics of hydrocarbon fuel within a cooling channel, including investigations on the crosssectional geometry of the cooling channel [8], working pressure [9,10], heating mode [11,12], and convective heat transfer correlation [13]. Owing to different off-design working conditions, sudden changes in the heat flux, inlet fuel mass flow, and working pressure in the cooling channel of the scramjet may occur.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Flow and Heat Transfer Characteristics of Uncracked Hydrocarbon Fuel under Super-Critical Pressure in the Cooling Channel of a Regeneratively Cooled Scramjet

Xu,

Lin,

et al. 2024

Applied Sciences

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Regeneratively cooled scramjets are successfully used as propulsion devices in hypersonic vehicles. During operation, scramjets experience acceleration. This special process causes a dynamic flow process, and heat transfer in the cooling channel commonly occurs, which may cause hazards and control difficulties for scramjets. A dynamic numerical model with a modified heat transfer coefficient calculation method was established to study the transient flow and heat transfer processes in a cooling channel. The dynamic characteristics of the flow and heat transfer under different conditions were calculated and are discussed, including the changes in the inlet fuel mass flow, heat flux, and pressure working conditions. The results indicate that the stable time of the cooling channel outlet fuel temperature is related to the rate of change in the inlet mass flow and heat flux. The stable time of the outlet fuel temperature under decreasing heat flux working conditions was approximately 12.5 s. These results summarize the dynamic flow and heat transfer characteristics, which are significant for designing cooling channels in scramjets.

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Section: Introductionmentioning

confidence: 99%

Dynamic Flow and Heat Transfer Characteristics of Uncracked Hydrocarbon Fuel under Super-Critical Pressure in the Cooling Channel of a Regeneratively Cooled Scramjet

Xu,

Lin,

et al. 2024

Applied Sciences

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“…Feng et al investigated the distribution of n ‐decane without pyrolysis flowed around a fuel injector in fuel‐cooled plate . Fu et al studied the flow maldistribution of aviation kerosene without pyrolysis in two helical tubes, and proposed that density variation is the key factor to influence the flow distribution under supercritical pressure . Qin et al and Jiang et al conducted simulation and experimental study on the flow maldistribution of mild‐cracking hydrocarbon fuels without coking in two parallel tubes, and proposed that the higher pressure suppresses the mal‐distribution .…”

Section: Introductionmentioning

confidence: 99%

Flow distribution of hydrocarbon fuel in parallel minichannels heat exchanger

et al. 2018

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In this article, the flow distribution of the Chinese No. 3 jet fuel in parallel minichannels heat exchanger under high temperature condition was investigated. The models of PFR and choked flow were established based on the real fluid model. The formation mechanism of flow maldistribution of the fuel in the freely distributed channels was studied. It was found that: under low heat flux, the slight flow rate deviation will be spontaneously eliminated; under high heat flux, the slight deviation of flow rate and heat flux will be enlarged and result in the channel with smaller flow rate entering the coking region. The feasibility and influence factors of the control method of flow distribution based on choked flow were discussed. The experimental results indicated that the minichannels fuel‐cooled plate with choked flow could maintain uniform flow distribution when the total fuel outlet temperature reached 1035 K. © 2018 American Institute of Chemical Engineers AIChE J, 64: 2781–2791, 2018

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Numerical Investigation of Boundary Grid Effect on Heat Transfer Computation of RP-3 at Supercritical Temperature of Helical Tube Wall

et al. 2021

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Experimental study of flow distribution for aviation kerosene in parallel helical tubes under supercritical pressure

Cited by 26 publications

References 41 publications

Dynamic Flow and Heat Transfer Characteristics of Uncracked Hydrocarbon Fuel under Super-Critical Pressure in the Cooling Channel of a Regeneratively Cooled Scramjet

Dynamic Flow and Heat Transfer Characteristics of Uncracked Hydrocarbon Fuel under Super-Critical Pressure in the Cooling Channel of a Regeneratively Cooled Scramjet

Flow distribution of hydrocarbon fuel in parallel minichannels heat exchanger

Numerical Investigation of Boundary Grid Effect on Heat Transfer Computation of RP-3 at Supercritical Temperature of Helical Tube Wall

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