The flow rate distribution of hydrocarbon fuel in parallel channels with different cross section shapes

Jiang, Yuguang; Xu, Yaxing; Qin, Jiang; Chetehouna, Khaled; Gascoin, Nicolas; Bao, Wen

doi:10.1016/j.applthermaleng.2018.03.033

Cited by 40 publications

(4 citation statements)

References 59 publications

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“…Guo et al investigated the effect of the inlet temperature on the heat transfer characteristics and their experimental results show that higher inlet temperatures can eliminate heat transfer deterioration in the inlet section [34]. Jiang et al investigated the effect of the cross-sectional shape on the cooling capacity of hydrocarbon fuels, and their results show that the triangular channel had the highest heat transfer capacity [35]. Li et al showed that the cross-sectional shape significantly affects the hydrocarbon fuel cracking and carbon accumulation [36].…”

Section: Introductionmentioning

confidence: 99%

Hydrocarbon Fuel Flow and Heat Transfer Investigation in Rotating Channels

Dong

Huang

2023

Energies

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Ram air turbines are used in the power generation systems of hypersonic vehicles, which can address the problem of the high power consumption of weapon systems. However, high incoming air temperatures can cause the turbine blades of power generation to ablate. At this point, the incoming air can no longer be used as a cooling source to cool the turbine blades. To prevent the ablation of the turbine blades of the hypersonic vehicle power generation, hydrocarbon fuel carried by the hypersonic vehicle itself is used to cool the turbine blades. Hence, hydrocarbon fuels under rotating conditions are investigated. The results show that the rotation leads to a strong pressure gradient that causes the density and dynamic viscosity of hydrocarbon fuel to increase dramatically. Compared to the static condition, the density and dynamic viscosity of the hydrocarbon fuel increase by a maximum of 65.1% and 405%, respectively, under the rotating condition. This leads to an obvious reduction in velocity. The comprehensive influence of the physical properties of the fuel, centrifugal force, and Coriolis force causes the convective heat transfer coefficient and Nusselt number of the channel to first increase and then decrease with the increase in the rotational speed. Compared to the static condition, the convective heat transfer coefficient and Nusselt number increase by a maximum of 69.7% and 45.6%, respectively, under the rotating condition. The critical rotational speed of the Nusselt number from rise to fall is 20,000 rpm for different inlet temperature conditions.

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Section: Introductionmentioning

confidence: 99%

Hydrocarbon Fuel Flow and Heat Transfer Investigation in Rotating Channels

Dong

Huang

2023

Energies

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“…The channel cross-sectional size parameters and cross-sectional shape under static conditions affect the buoyancy effect, flow state and temperature variation. For rectangular channels, optimal aspect ratios exist to improve the cooling capacity of hydrocarbon fuels [33][34][35][36][37][38][39][40]. Therefore, when the hydrocarbon fuel is under rotating conditions and the channel cross-sectional shape and size parameters are also changed, the flow state, temperature distribution and thermal performance change significantly due to the comprehensive impact of the cross-sectional shape and the rotation induced rotational additional forces.…”

Section: Introductionmentioning

confidence: 99%

Effect of Rotating Channel Turning Section Clearance Size on Heat Transfer Characteristics of Supercritical Pressure Hydrocarbon Fuel

Dong,

Huang

2023

Energies

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For the problem of power generation turbine blade ablation in hypersonic vehicles, hydrocarbon fuel carried by the vehicle is used to cool the turbine blades. In order to fully utilize the cooling capacity of hydrocarbon fuel, the structure of the cooling channels needs to be optimized. In this study, a variable clearance hydrocarbon fuel cooling channel is applied for the first time to the rotating turbine blades of a hypersonic vehicle to enhance the heat transfer ability of hydrocarbon fuel. The effect of clearance size on the heat transfer performance of hydrocarbon fuel under rotating conditions is investigated. The accuracy of the calculations is verified by comparison with experimental data. The results of the study show that the heat transfer performance can be significantly improved by changing the clearance of the turning section. The clearance size 2.5 D channel has the highest thermal performance with a maximum improvement of 1.8 times. The law of change of thermal performance is affected by crossing the critical temperature point, as it is different before and after the crossing. Thermal performance changes from decreasing then increasing to increasing then decreasing as the clearance size increases for high rotation speed conditions as the temperature of the entrance straddles the critical temperature. The Nusselt number first increases and then decreases for all channels with different clearance sizes with an increasing rotational speed. The friction factor changes from first increasing and then decreasing to decreasing and then increasing as the clearance size increases for high rotation speed conditions as the temperature of the entrance straddles the critical temperature.

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“…Two‐phase flow is commonly encountered in the petroleum, chemical, and nuclear industries, especially in the combustion systems, power generation, and oil and gas transport networks 1, 2. Hydrocarbon two‐phase flow is a type of multiphase flow involving the corresponding movement of two immiscible liquid‐gas phases with disparate physical properties 1, 3, 4. The study of flow effects on qualities like flow pattern, velocity distribution, and pressure drop has long been of engineering interest 5–7.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Numerical Investigation of the Behavior of Two‐Phase Hydrocarbon Flow Phenomena in Horizontal Flowline with Different Turbulence Models Using OpenFOAM

et al. 2022

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Two‐phase flow in pipes finds application in many industrial activities, mostly in the energy sector, necessitating model systems that correctly predict flow behaviors like flow pattern, pressure drop, and liquid holdup during the design and planning of a fluid transport system. This study aims to analyze three‐dimensional two‐phase liquid‐gas flows in a horizontal flowline. InterFoam, a transient two‐phase solver, was first modified to implement the low‐Reynolds number (LRN) k‐ε model in the OpenFOAM source code. This LRN k‐ε turbulence model is utilized to resolve the turbulence phenomena within the two‐phase mixtures. The two‐phase flow is calculated by using the developed solver based on the volume‐of‐fluid approach. Flow pattern results at different superficial gas and liquid velocities are validated by experimental data from the literature. Then, three Reynolds‐averaged Navier‐Stokes models were used for computations: LRN k‐ε, standard k‐ε, and the shear stress transport k‐ω model.

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The flow rate distribution of hydrocarbon fuel in parallel channels with different cross section shapes

Cited by 40 publications

References 59 publications

Hydrocarbon Fuel Flow and Heat Transfer Investigation in Rotating Channels

Hydrocarbon Fuel Flow and Heat Transfer Investigation in Rotating Channels

Effect of Rotating Channel Turning Section Clearance Size on Heat Transfer Characteristics of Supercritical Pressure Hydrocarbon Fuel

A Comparative Numerical Investigation of the Behavior of Two‐Phase Hydrocarbon Flow Phenomena in Horizontal Flowline with Different Turbulence Models Using OpenFOAM

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