卢志威,杨振亮,马赵丹丹,温建,李雷,刘马林

• 1:中广核研究院有限公司
• 2:深圳核电站高安全性事故容错燃料技术工程实验室
• 3:中国工程物理研究院材料研究所
• 4:清华大学核能与新能源技术研究院

摘要(Abstract)：

惰性基弥散燃料芯块(inert matrix dispersion pellet,简称IMDP)相比传统的UO_2燃料热导率显著提升。目前已经完成模拟IMDP的制备工艺摸索,制备获得的模拟IMDP性能良好。结合制备工艺优化需求,研究TRISO颗粒分布形式及其离散化对IMDP燃料传热性能的影响。结果表明:稳态运行工况下,IMDP的峰值温度显著低于UO_2芯块;采用均匀化假设的有效热导率计算IMDP温度分布时,需额外考虑TRISO颗粒离散化造成的惩罚;TRISO颗粒封装百分比一定时,其离散分布形式对IMDP芯块的有效热导率没有影响,但会影响芯块的峰值温度。

关键词(KeyWords)： 事故容错;惰性基;核燃料;传热

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划（2017YFB0702404）;; 国家自然科学基金青年科学基金项目（51604250）;; 国家重大专项（2015ZX06004-001）资助

作者(Author): 卢志威,杨振亮,马赵丹丹,温建,李雷,刘马林

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