Numerical investigation of heat transfer characteristics and flow resistance of kerosene RP-3 under supercritical pressure

Zhu, Jianqin; Tao, Zhi; Deng, Hongwu; Wang, Kai; Yu, Xiao

doi:10.1016/j.ijheatmasstransfer.2015.07.118

Cited by 49 publications

(15 citation statements)

References 28 publications

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“…As a result, heat transfer is deteriorated. Similar phenomena have been reported in the literatures[13,14].As the bulk fluid temperature continually increases along the tube length and approaches the pseudo-critical temperature, the thermo-physical properties of bulk fluid change dramatically. The specific heat increases and the viscosity decreases and thus the fluid velocity and Reynolds number both increase.…”

supporting

confidence: 87%

“…At supercritical pressures, either heat transfer enhancement (HTE) or heat transfer deterioration (HTD) may occur. Some of the experiments observed no heat transfer deterioration, but Zhu et al [13] , Dang et al [14] , Zhao et al [15] and Li et al [16] did. They found the deterioration of the heat transfer occurred when the inner wall temperature or the fluid temperature was close to the pseudo-critical point.…”

Section: Introductionmentioning

confidence: 96%

“…Their results showed that heat transfer coefficient increased with increasing heat fluxes or inlet temperatures, but decreased with increasing inlet pressures. Zhu et al [13] numerically studied the heat transfer characteristics and flow resistance of kerosene at supercritical pressures. They found that the local Nusselt number first increased and then suddenly dropped at a certain point.…”

Section: Introductionmentioning

confidence: 99%

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Heat transfer deterioration of aviation kerosene flowing in mini tubes at supercritical pressures

Huang

2017

International Journal of Heat and Mass Transfer

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Heat transfer performances of aviation kerosene flowing in mini tubes at supercritical pressures were investigated experimentally and numerically. A ten-species surrogate model with the extended correponding state was used to calculate the thermophysical and transport properties of kerosene and the Re-Normalization Group (RNG) k-ε turbulent model with the enhanced wall treatment was adopted to consider the turbulent effect. The numerical results agree well with the experimental data. Two types of heat transfer deterioration were observed in this paper. The first type of deterioration occurs at the place where the wall temperature exceeds the pseudo-critical temperature, while the second type occurs when the bulk fluid temperature exceeds the pseudo-critical temperature. The effects of several key parameters, such as mass flow rate, heat flux, pressure and inlet temperature on heat transfer deterioration were studied in detail. The results reveal that the heat transfer coefficient increases with increasing mass flow rate and inlet temperature. The effect of heat flux on heat transfer is complicated, while the effect of pressure on heat transfer is insignificant. Heat transfer deterioration can be effectively eliminated by increasing mass flow rate and pressure and decreasing heat flux and inlet temperature. The dramatic variation of thermo-physical properties is the main reason for the heat transfer deterioration.

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supporting

confidence: 87%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Heat transfer deterioration of aviation kerosene flowing in mini tubes at supercritical pressures

Huang

2017

International Journal of Heat and Mass Transfer

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“…The Reynolds-averaged Navier-stokes (RANS) method is mostly used to simulate the supercritical flow and heat transfer in which turbulence models play a key role [12]. He et al [13] performed numerical simulations of turbulent mixed convection heat transfer experiments with supercritical carbon dioxide flowing in a uniformly heated vertical tube.…”

Section: Introductionmentioning

confidence: 99%

Large eddy simulation of supercritical heat transfer to hydrocarbon fuel

Tao

Cheng

Zhu

et al. 2018

International Journal of Heat and Mass Transfer

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In this article, a large eddy simulation (LES) method for the heat transfer of the hydrocarbon fuel flowing through the uniformly heated miniature round pipe at supercritical pressure has been formulated and validated. The four species surrogate model was used to simulate the real thermophysical properties of the fuel. Validation of the developed LES model was carried out through comparisons of the wall temperature and pressure drop with available experimental data and other turbulence model results. Results show that the LES gave the best prediction. Further calculations based on the proposed LES for three cases including subcritical, transcritical and supercritical temperature ranges were numerically investigated in a systematic manner. It was found that the entrance effect occurred among the subcritical, transcritical and supercritical temperature cases that caused by the developing thermal boundary layer. The significant variation of the thermophysical properties near the pseudo-critical temperature would weaken the heat transfer in the transcritical case where the velocity fluctuation affected more on turbulent heat transfer than the temperature fluctuation did.

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“…The heat transfer efficiency has thus become the key factor affecting the thermal protection. However, dramatic changes in properties when hydrocarbon fuel experiences the pseudo-critical temperature during the cooling [9] may lead to severe heat transfer deterioration [10][11][12][13] and the structure may get over-temperature, which is unacceptable. For another, at a certain local high heat flux zone, for example, the cavity, heat flux can be as high as 3MW /m 2 , which is a serious challenge for thermal protection [14,15].…”

Section: Introductionmentioning

confidence: 99%

Numerical heat transfer analysis of transcritical hydrocarbon fuel flow in a tube partially filled with porous media

et al. 2016

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Hydrocarbon fuel has been widely used in airbreathing scramjets and liquid rocket engines as coolant and propellant. However, possible heat transfer deterioration and threats from local high heat flux area in scramjet make heat transfer enhancement essential. In this work, 2-D steady numerical simulation was carried out to study different schemes of heat transfer enhancement based on a partially filled porous media in a tube. Both boundary and central layouts were analyzed and effects of gradient porous media were also compared. The results show that heat transfer in the transcritical area is enhanced at least 3 times with the current configuration compared to the clear tube. Besides, the proper use of gradient porous media also enhances the heat transfer compared to homogenous porous media, which could help to avoid possible overtemperature in the thermal protection.

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Numerical investigation of heat transfer characteristics and flow resistance of kerosene RP-3 under supercritical pressure

Cited by 49 publications

References 28 publications

Heat transfer deterioration of aviation kerosene flowing in mini tubes at supercritical pressures

Heat transfer deterioration of aviation kerosene flowing in mini tubes at supercritical pressures

Large eddy simulation of supercritical heat transfer to hydrocarbon fuel

Numerical heat transfer analysis of transcritical hydrocarbon fuel flow in a tube partially filled with porous media

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