| 高体积份额下包覆颗粒弥散燃料等效热学模型 |
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| 引用本文： | 李文杰,余红星,肖忠,焦拥军,陈平,李垣明.高体积份额下包覆颗粒弥散燃料等效热学模型[J].核动力工程,2021,42(4):96-100. |
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| 作者姓名： | 李文杰 余红星 肖忠 焦拥军 陈平 李垣明 |
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| 作者单位： | 1.中国核动力研究设计院核反应堆系统设计技术重点实验室，成都， 610213 |
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| 摘 要： | 准确预测核燃料的内部温度场分布，对于多层包覆颗粒弥散核燃料元件的设计及筛选具有重要的指导意义。在多层包覆颗粒及其弥散块体的等效热导率模型基础上，本文针对高体积份额情况分析建立了等效传热计算方法及其数值模型，并研究了燃料颗粒的空间分布、颗粒尺寸、团聚等因素对核燃料元件温度场的影响。本研究有助于理解多层包覆颗粒弥散核燃料元件的微观-宏观传热机制，为核燃料的设计、优化和安全分析提供了分析工具。
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| 关 键 词： | 模拟 弥散燃料 等效热导率 |
| 收稿时间： | 2020-05-21 |
An Effective Thermal Model of Coated Particle Dispersed Fuel with High Packing Fraction |
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| Affiliation: | 1.Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China2.Nuclear Power Institute of China, Chengdu, 610213, China |
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| Abstract: | Accurate prediction of the temperature distribution in nuclear fuel is an important step for the design and screening of multi-coating particle dispersed nuclear fuel. This study aims to establish an effective thermal model and numerical solutions for macro scale heat transfer analysis by investigating the effective thermal properties of multi-coating particles and the dispersed fuel bulk. The effects of particle arrangement, sizes, clustering on temperature distribution inside nuclear fuel element was studied with the established effective model. This study helps clarify the micro- and macro- scale heat transfer mechanism of multi-coating particle dispersed fuel, and provides a guidance for the design, optimization and safety analysis of this type of fuel. |
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