颗粒流散裂靶缩比模型流态实验研究  

Flow Experimental Study in Scaling Model of Granular Spallation Target

作　　者：刘洋 强成文[2] 李龙[2] 王飞[2] 杨伟峰[2] 赵强[2] 张雪荧[2] 

机构地区：[1]中国科学院大学,北京100049 [2]中国科学院近代物理研究所,甘肃兰州730000

出　　处：《原子能科学技术》2016年第10期1881-1886,共6页Atomic Energy Science and Technology

基　　金：中国科学院战略性先导科技专项资助项目(XDA03030300)

摘　　要：散裂靶是加速器驱动次临界系统(ADS)的重要组成部分,颗粒流散裂靶是最新提出并经理论计算的一种高功率散裂靶,研究其颗粒流的流动特性对散裂靶的设计优化有重要意义。本文以螺旋提升机为颗粒流驱动装置,搭建一套颗粒流循环回路系统,研究了倾斜段管道的倾斜角度对三维颗粒流从堵塞流向密集流转变的影响。研究发现,随着螺旋提升机提升频率的增加(即颗粒流量的增加),在散裂靶靶区存在颗粒稀疏流-密集流转变,在靶区附近能形成稳定的密集流。The granular spallation target has been raised through theoretical calculation,which is the crucial part of accelerator driven sub-critical system（ADS）.It is important to study the flow inside the spallation target before optimizing design.The experiments were carried out in a three-dimensional channel with a screw conveyor as granular drive.The jam-to-dense transition of granular flow was studied with different inclination angles.The variation of flow rate with elevate frequency was further studied.The flow pattern is changed from dilute flow to dense flow with increase of elevate frequency.The stable dense flow exists in main target section.

关 键 词：颗粒流 ADS 螺旋提升机 密集流 

分 类 号：TL375[核科学技术—核技术及应用]