核安全2025，Vol.24Issue(2)：52-58,7.
聚变堆包层球床有效热导率实验研究及数值模拟
Experimental Measurement and Numerical Simulation of the Effective Thermal Conductivity of the Pebble Bed of the Fusion Reactor Breeding Blanket
吴琪刚 1雷明准 2刘钊 1张文浩 3徐坤2
作者信息
- 1. 中国科学院合肥物质科学研究院 等离子体物理研究所,合肥 230031||中国科学技术大学,合肥 230026
- 2. 中国科学院合肥物质科学研究院 等离子体物理研究所,合肥 230031
- 3. 中国科学技术大学,合肥 230026
- 折叠
摘要
Abstract
Solid breeder blanket is a design in fusion reactor to achieve neutron multiplication and tritium breeding with a particle pebble bed structure,and is one of the important components for achieving tritium self-sustaining.The measurement of the effective thermal conductivity of the blanket pebble bed is one of the important prerequisites for studying the temperature of the blanket releasing tritium.In this paper,the ef-fective thermal conductivity of the blanket pebble bed is measured and predicted by combining experiments with numerical simulations.The thermal conductivity of the Li2TiO3 pebble bed with a box particle size of 1 mm at room temperature was measured using a Hot-Disk thermal constant analyzer.Subsequently,the thermal conductivity of Particle Flow Code(PFC)numerical simulation parameters of the Li2TiO3 pebble bed at room temperature was calibrated using the PFC particle discrete element software in combination with the experimental results.At the same time,combined with the calibrated Li2TiO3 contact thermal resistance,the thermal conductivity of the Li2TiO3 pebble bed at different strains was predicted.The research results show that the thermal conductivity of the pebble bed at room temperature is relatively low,and the effective thermal conductivity of the pebble bed gradually increases with the increase of the pebble bed strain.This article can provide parameters and guidance for the subsequent blanket pebble bed heat transfer.关键词
聚变堆/包层球床/热导率/离散元/接触热阻Key words
fusion reactor/blanket pebble bed/thermal conductivity/discrete element method/contact thermal resistance分类
能源科技引用本文复制引用
吴琪刚,雷明准,刘钊,张文浩,徐坤..聚变堆包层球床有效热导率实验研究及数值模拟[J].核安全,2025,24(2):52-58,7.
