Numerical study on beryllium dust distribution during LOVA in ITER

doi:10.16568/j.0254-6086.201602013

Abstract

Abstract:

The three-dimensional numerical model of ITER, where the design structure was reasonably simplified, was built by computational fluid dynamics (CFD) method. The migration process of dust composed of beryllium in ITER during a LOVA was reproduced. The dust distributions at different heights and moments were analyzed. And it was found that the volume fraction of beryllium dust had a downward trend as the height increases and that the volume fraction of beryllium dust has an upward trend as time went.

Key words: ITER, Loss of vacuum accident, Beryllium dust distribution, Numerical research

摘要：

采用计算流体动力学方法，通过对ITER 装置的设计结构进行合理简化，建立了ITER 装置的三维计算模型，研究了失真空事故下铍灰尘在ITER 装置内的迁移进程，得到了铍灰尘在ITER 装置内的分布情况。通过分析铍灰尘在不同截面高度、不同时刻的分布特性，得到以下结论：随着高度增加，截面位置上的铍灰尘体积分数呈下降趋势；随着时间推移，截面位置上的铍灰尘体积分数呈上升趋势。

关键词: ITER, 失真空事故, 铍灰尘分布, 数值研究

CLC Number:

TL62+3

HOU Li-qiang，TONG Li-li. Numerical study on beryllium dust distribution during LOVA in ITER[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2016, 36(2): 174-180.

侯丽强，佟立丽. ITER 失真空事故下铍灰尘分布的数值研究[J]. 核聚变与等离子体物理, 2016, 36(2): 174-180.

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