Performance evaluation of power generation system with fuel vapor turbine onboard hydrocarbon fueled scramjets

Zhang, Duo; Qin, Jiang; Feng, Yuqing; Ren, Fengzhi; Bao, Wen

doi:10.1016/j.energy.2014.09.046

Cited by 71 publications

(13 citation statements)

References 19 publications

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“…Verification of the cooling channel model is accomplished by comparing the computational results with the experimental data reported in [42]. As reported in the literature, an electric heating tube test bench which could generate constant heat flux was built to conduct the experiments.…”

Section: Verification Of the Cooling Channel Modelmentioning

confidence: 99%

Quasi-One-Dimensional Model of Hydrocarbon-Fueled Scramjet Combustor Coupled with Regenerative Cooling

Xiong

Qin

Cheng

et al. 2022

International Journal of Aerospace Engineering

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In order to rapidly predict the performance of hydrocarbon-fueled regeneratively cooled scramjet engine in system design, a quasi-one-dimensional model has been developed. The model consists of a supersonic combustor model with finite-rate chemistry and a cooling channel model with real gas working medium, which are governed by two sets of ordinary differential equations separately. Additional models for wall friction, heat transfer, sonic fuel injection, and mixing efficiency are also included. The two sets of ordinary differential equations are coupled and iteratively solved. The SUNDIALS code is used since the equations for supersonic combustion flow are stiff mathematically. The cooling channel model was verified by electric heating tube tests, and the supersonic combustor model was verified by experimental results for both hydrogen and hydrocarbon-fueled scramjet combustors. Three cases were comparatively studied: (1) scramjet combustor with an isothermal wall, (2) scramjet combustor with an adiabatic wall, and (3) scramjet combustor with regenerative cooling. Results showed that the model could predict the axial distributions of flow parameters in the supersonic combustor and cooling channel. Differences on ignition delay time and combustion efficiency for the three cases were observed.

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Section: Verification Of the Cooling Channel Modelmentioning

confidence: 99%

Quasi-One-Dimensional Model of Hydrocarbon-Fueled Scramjet Combustor Coupled with Regenerative Cooling

Xiong

Qin

Cheng

et al. 2022

International Journal of Aerospace Engineering

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“…The expert judgment method is used to carry out the second-level index grade judgement of new energy power generation [8], and the group includes 10 experts. Thus we could get the following in Fig.…”

Section: The Fuzzy Evaluation Model Of New Energy Power Generation Pementioning

confidence: 99%

The Fuzzy Mathematical Evaluation of New Energy Power Generation Performance

Fang¹

2015

TOEFJ

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With the rapid development of new energy industry, there are more and more evaluation researches about it. On the basis of consulting lots of reference, I determine the evaluation system of new energy power generation performance in this paper, and determine the weight of each evaluation index by employing hierarchical comparison method. Using fuzzy mathematical knowledge to establish the fuzzy comprehensive evaluation model of new energy power generation performance, it is divided into 5 levels. The first-level index judgment vector could be obtained by using expert judgment method to judge the second-level index. Grade judgment vector of new energy power generation performance could be obtained through first-level index weight vector. And the levels of new energy power generation performance could be determined based on the maximum principle.

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“…Hypersonic vehicles have a high power consumption owing to the utilization of various systems during flight [1]. Efficient power-generation systems are crucial for hypersonic vehicles owing to the increase in the system complexity and power consumption [2].…”

Section: Introductionmentioning

confidence: 99%

“…Efficient power-generation systems are crucial for hypersonic vehicles owing to the increase in the system complexity and power consumption [2]. Using fuel vapor turbine is one of the methods of solving the power shortage problem of hypersonic vehicles [1]. As the fuel cracking reaction continues, the ability of the fuel cracking gas to perform work is enhanced.…”

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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Performance evaluation of power generation system with fuel vapor turbine onboard hydrocarbon fueled scramjets

Cited by 71 publications

References 19 publications

Quasi-One-Dimensional Model of Hydrocarbon-Fueled Scramjet Combustor Coupled with Regenerative Cooling

Quasi-One-Dimensional Model of Hydrocarbon-Fueled Scramjet Combustor Coupled with Regenerative Cooling

The Fuzzy Mathematical Evaluation of New Energy Power Generation Performance

Hydrocarbon Fuel Flow and Heat Transfer Investigation in Rotating Channels

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