Sub-channel analysis of lead–bismuth fast reactor fuel assembly with wire spacers for China initiative accelerator driven system

Liu, Jia-Tai; Peng, Tao; Wang, Guan; Su, Xing-Kang; Tao, Yujie; Fan, Dajun; Li, Xianwen; He, Minghan; Xu, Hu-Shan; Gu, Long

doi:10.1016/j.anucene.2021.108965

Cited by 12 publications

(6 citation statements)

References 17 publications

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“…The conservation equations for incompressible fluids are solved using the finite difference method, which ensures the conservation of the total mass entering and leaving a control volume. The thermal hydraulic parameters are then calculated using the conservation equations for mass, energy, and momentum (Liu et al, 2022).…”

Section: Sub-channel Code For Lbfrmentioning

confidence: 99%

“…This chapter introduces the friction pressure drop model, convective heat transfer model, and turbulent mixing model that have been integrated into the code. Furthermore, the correlations for physical properties and fundamental numerical analysis models continue to rely on the sub-channel code COBRA-LFR developed by Liu et al (2022).…”

Section: Sub-channel Code For Lbfrmentioning

confidence: 99%

“…Using the Reynolds analogy and visualization methods, they derived the flow pressure drop and cross-sectional pressure drop profiles for the wire-type spacer's fuel assembly. On the computational side, Liu et al (2022) fine-tuned a sub-channel analysis code for simulating thermo-hydraulics of wire-type spacer fuel assemblies cooled by liquid LBE. Leveraging this code, they analyzed the thermohydraulic characteristics of a comprehensive 61-rod wire-type spacers fuel assembly.…”

Section: Introductionmentioning

confidence: 99%

“…Since most of the sub-channel analysis code are closed-source, for the sake of studying the thermal hydraulic characteristics of CiADS LBE cooling fuel assemblies with grid-type spacers, this study is based on the optimization of the sub-channel analysis code for LBE cooling winding fuel assemblies with grid-type spacers by Liu et al (2022). By incorporating flow pressure drop, convective heat transfer, and turbulent mixing models suitable for the fuel assembly with grid-type spacers cooled by lead and bismuth, the code's development aims to analyze the thermal hydraulics of the CiADS lead and bismuth-cooled fuel assembly with grid-type spacers.…”

Section: Introductionmentioning

confidence: 99%

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Sub-channel analysis for LBE cooled fuel assembly with grid type spacers of China initiative accelerator driven system

Chen,

Qiu,

Zhang

et al. 2023

Front. Energy Res.

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The present study focuses on the thermal hydraulic characteristics of fuel assemblies in the China Initiative Accelerator Driven subcritical System (CiADS), which utilizes grid-type spacers to support lead bismuth eutectic (LBE) cooled fast reactors. While the structural design and mechanical analysis of CiADS triangular fuel assemblies with grid-type spacers have been preliminarily investigated, there is a pressing need to study the thermal hydraulic behavior of liquid LBE within these fuel assemblies. This analysis is crucial for assessing the safety and economy of the CiADS subcritical reactor. The sub-channel analysis code, based on the lumped parameter method, plays a vital role in rapidly evaluating the safety features of LBE-cooled fast reactor fuel assemblies. To comprehensively evaluate the thermal hydraulic performance of fuel assemblies with grid-type spacers in the CiADS LBE cooling system, the flow pressure drop model, turbulent mixing model, and convective heat transfer model for the fuel assembly structure with grid-type spacers were incorporated into the existing CiADS sub-channel analysis code. This enhanced code has been successfully employed in the thermal hydraulic analysis of fuel assemblies utilizing wire-type spacers in the CiADS system. To verify the validity and accuracy of the modified CiADS sub-channel analysis code in calculating triangular fuel assemblies with grid-type spacers, the code was first utilized to replicate a 19-rods flow heat transfer experiment with grid-type spacers cooling liquid LBE. A comparison between the simulation and experimental results confirms that the CiADS sub-channel analysis code can predict the coolant temperature and fuel rod surface temperature in fuel assemblies with grid-type spacers. Subsequently, the structure and thermal hydraulic design of the latest CiADS fuel assembly with grid-type spacers were reviewed. Finally, taking into account the aforementioned enhancements to the CiADS sub-channel analysis code, a comprehensive thermo-hydraulic calculation of the CiADS fuel assembly with grid-type spacers was conducted. The results demonstrate that the coolant outlet temperature, maximum cladding temperature, and maximum fuel pellet temperature all fall within the design parameters of CiADS. Furthermore, the impact of the number of rods in different rod bundles (91, 61, 37, and 7 rods) on thermal hydraulic performance was analyzed. The findings indicate that, while ensuring calculation accuracy and efficiency, the results obtained from the 37-rod bundle can effectively reflect the thermal hydraulic behavior of the reactor core.

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Section: Sub-channel Code For Lbfrmentioning

confidence: 99%

Section: Sub-channel Code For Lbfrmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sub-channel analysis for LBE cooled fuel assembly with grid type spacers of China initiative accelerator driven system

Chen,

Qiu,

Zhang

et al. 2023

Front. Energy Res.

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“…However, this model is based on the existing fuel resources and lacks the utilization and analysis of new fuels. In addition, the COREX fuel proportioning model based on decision tree algorithm rule extraction is also a widely used model at present [7][8][9], and its specific research object is the COREX-3000-2# boiler. When learning the sample data, the decision tree C4 5 rule extraction mechanism is introduced, and the quantitative relationship between fuel proportioning and output coke ratio [10][11] is analyzed based on knowledge rules, which greatly improves the energy release of fuel [12][13].…”

Section: Introductionmentioning

confidence: 99%

Fuel Combination Optimization Model of Thermal Power Plant Based on New Particle Swarm Optimization Algorithm

Cui

2024

J. Phys.: Conf. Ser.

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Influenced by the unbalanced state of particle swarm in the process of fuel combustion in thermal power plants, the fuel cost in the thermal power generation stage is relatively high. Therefore, a new particle swarm optimization model for fuel combination in thermal power plants is proposed. Combined with the combustion properties of different fuels, from the point of view of particle swarm optimization, in the process of carrying out specific particle swarm optimization simulation, the original particle swarm optimization algorithm is improved adaptively. A new particle swarm optimization algorithm is constructed by coupling it with a multiphase turbulence model. The fuel combustion performance of the power plant is analyzed by using its coupling. The optimization model of fuel combination in the thermal power plant is constructed by maximizing the energy release of fuel as the core, and the state of the fluid-particle field is taken as the constraint condition. In the test results, the design of the fuel combination optimization model can fully improve the energy release degree of fuel and reduce fuel consumption under the same power generation demand, which has a positive effect on power generation cost control.

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Thermal-hydraulic study in a wire-wrapped 19-rod bundle based on an isotropic four-equation model

Li²,

Zhang³

et al. 2022

Annals of Nuclear Energy

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Sub-channel analysis of lead–bismuth fast reactor fuel assembly with wire spacers for China initiative accelerator driven system

Cited by 12 publications

References 17 publications

Sub-channel analysis for LBE cooled fuel assembly with grid type spacers of China initiative accelerator driven system

Sub-channel analysis for LBE cooled fuel assembly with grid type spacers of China initiative accelerator driven system

Fuel Combination Optimization Model of Thermal Power Plant Based on New Particle Swarm Optimization Algorithm

Thermal-hydraulic study in a wire-wrapped 19-rod bundle based on an isotropic four-equation model

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