固态氚增殖包层中球床堆积性能研究

doi:10.16568/j.0254-6086.201804008

核聚变与等离子体物理 ›› 2018, Vol. 2 ›› Issue (4): 420-427.DOI: 10.16568/j.0254-6086.201804008

固态氚增殖包层中球床堆积性能研究

巩保平1，冯勇进1，何开辉2，廖洪彬1，王晓宇1，冯开明1

(1. 核工业西南物理研究院，成都610041；2. 中国国际核聚变能源计划执行中心，北京 100038)

出版日期:2018-12-15 发布日期:2018-12-13
作者简介:巩保平(1990-)，男，甘肃天水人，硕士，主要从事聚变堆功能材料和固态包层球床性能的研究。
基金资助:
国家磁约束核聚变能发展研究专项(2014GB111001，2014GB112003)

Investigation of packing behavior of pebble bed in solid tritium breeder blanket

GONG Bao-ping1, FENG Yong-jin1, HE Kai-hui2,LIAO Hong-bin1, WANG Xiao-yu1, FENG Kai-ming1

(1. Southwestern Institute of Physics, Chengdu 610041; 2. China International Nuclear Fusion Energy Program Execution Center, Beijing 100862)

Online:2018-12-15 Published:2018-12-13

摘要/Abstract

摘要：

基于球床堆积实验和离散元数值模拟对包层中球床的堆积性能做了初步研究。圆柱形一元(单尺寸颗粒)球床的堆积性能的结果显示随着球床直径与颗粒直径比的增大，球床的平均堆积因子逐渐增高，实验与模拟结果一致；采用二元颗粒(双尺寸颗粒)、提高颗粒粒度比可以显著提高球床的堆积因子，二元球床的堆积因子随着大颗粒体积分数的增加先增加后减小，在大颗粒体积分数约为60%~80%时达到最大。优化了二元球床的填充工艺，最终二元球床的堆积因子基本达到0.8，但球床的均匀性欠佳。

关键词: 固态氚增殖包层, 氚增殖剂球床, 堆积性能, 堆积因子, 离散元方法

Abstract:

The packing behaviors of pebble bed in blanket were investigated by packing experiment and discrete element modeling. The packing behaviors of cylinder mono-sized pebble beds show that the average packing factor is gradually increased with increase of the diameter ratio of the bed to pebbles. The experimental and simulated results of cylinder mono-sized pebble beds are in good agreement. Using binary-sized pebble packing and increasing the size ratio of binary pebbles can increase the packing factor of pebble bed, significantly. For binary-sized pebble bed, the average packing factor increases first and then decreases with the increase of the large pebble volume fraction. The maximum value is achieved when the larger pebble volume fraction is about 60%~80%. By optimizing the filling process of the pebble bed, the packing factor of the binary-sized pebble bed has reached 0.8, but the uniformity of the binary-sized bed is poor.

Key words: Solid tritium breeder blanket, Tritium breeder pebble bed, Packing behavior, Packing factor, Discrete element method.

中图分类号:

TL62+7

巩保平1，冯勇进1，何开辉2，廖洪彬1，王晓宇1，冯开明1. 固态氚增殖包层中球床堆积性能研究[J]. 核聚变与等离子体物理, 2018, 2(4): 420-427.

GONG Bao-ping, FENG Yong-jin, HE Kai-hui, LIAO Hong-bing, WANG Xiao-yu, FENG Kai-ming. Investigation of packing behavior of pebble bed in solid tritium breeder blanket[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2018, 2(4): 420-427.

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固态氚增殖包层中球床堆积性能研究

Investigation of packing behavior of pebble bed in solid tritium breeder blanket

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