气冷堆燃料组件材料性能及阻力特性数值研究  

Numerical Investagation of the Material Properties and Resistance Characteristics of Fuel Assemblies for Gas Cooled Reactor

作　　者：周娅 王旭 张宏森 ZHOU Ya;WANG Xu;ZHANG Hongsen(College of Materials Science and Chemical Engineering,Harbin Engineering University,Harbin 150001,China;China Nuclear Engineering Consulting Co.,Ltd.,Beijing 100032,China)

机构地区：[1]哈尔滨工程大学材料科学与化学工程学院,黑龙江哈尔滨150001 [2]中核工程咨询有限公司,北京100032

出　　处：《材料开发与应用》2024年第6期112-118,共7页Development and Application of Materials

摘　　要：核电发展有助于推动能源的高效利用,第四代反应堆的出现,则有望进一步提高核能的利用效率和安全性。本研究对第四代气冷反应堆燃料组件的材料性能及数值进行研究,针对燃料组件冷却剂、燃料包壳材料以及燃料芯块材料进行了调研及分析,考虑到第四代反应堆应具有更高的传热能力、更好的固有安全性以及燃料包壳与冷却剂良好的化学相容性等特点,选取了超临界二氧化碳作为冷却剂,氧化物弥散强化(ODS)钢作为燃料包壳材料,UN燃料芯块作为燃料材料,并对选取的材料物性进行研究,确认各种材料应用于第四代反应堆的可行性,并进行材料的阻力性能研究。结果表明,流速和温度会显著影响通道的摩擦系数;在接近临界工况条件下,摩擦系数随着运行工况接近临界点而逐渐降低。The development of nuclear power contributes to the efficient utilization of energy,and the emergence of fourth-generation reactor is expected to further improve the efficiency and safety of nuclear energy utilization.In this work,the material properties for the fourth-generation reactor are studied.The coolant for fuel components,fuel cladding materials,and fuel pellet materials for the fourth-generation reactor considering its characteristics such as higher heat transfer capacity,better inherent safety and chemical compatibility between fuel cladding and coolant,are investigated and analyzed.Supercritical carbon dioxide is selected as the coolant,oxide dispersion strengthened(ODS)steel as the fuel cladding material,and UN as the fuel pellet material.The physical properties of selected materials are studied to confirm their feasibility with gas cooled reactors.Resistance performance of materials is also investigated.It is found that flow rate and temperature significantly affect friction coefficient,and that the friction coefficient gradually decreases as operating condition approaches criticality under the near-critical condition.

关 键 词：燃料组件 冷却剂 燃料芯块 燃料包壳 摩擦阻力 

分 类 号：TL341[核科学技术—核技术及应用]