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核聚变与等离子体物理 ›› 2015, Vol. 35 ›› Issue (4): 356-360.DOI: 10.16568/j.0254-6086.201504012

• 核聚变工程技术 • 上一篇    下一篇

EAST 钨偏滤器外靶板热工水力分析

肖 旋,姚达毛,曹 磊,周自波   

  1. (中国科学院等离子体物理研究所,合肥 230031)
  • 出版日期:2015-12-15 发布日期:2015-12-15
  • 作者简介:肖旋(1990-),男,湖北武汉人,硕士研究生,主要从事EAST 和CFETR 偏滤器的研制工作。

Thermal hydraulic analysis of EAST W-divertor outer target

XIAO Xuan, YAO Da-mao, CAO Lei, ZHOU Zi-bo   

  1. (Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031)
  • Online:2015-12-15 Published:2015-12-15

摘要:

为提高EAST 偏滤器的抗热载和排热能力,将偏滤器第一壁的材料由原来的石墨改为钨,在结构上,靶板采用了类ITER 的单块结构,支撑和冷却采用一体化的盒式结构。确定了EAST 钨偏滤器的冷却结构后,通过水管的流固耦合传热模型,分析了外靶板在紊流冷却方式下的散热情况。同时计算了在水冷系统失效的情况下,偏滤器外靶板的危险区域在3、5、8、10MW·m-2 热流密度下的瞬态温度分布情况。结果表明,水流速度在4m·s-1 时, 水管可以承受峰值功率10MW·m-2 的热流密度,能够很好地满足EAST 装置运行的排热要求。

关键词: EAST, 钨偏滤器, 热工水力分析, 失效

Abstract:

In order to improve the anti-thermal load and heat dissipation performance of the divertor of EAST, its first wall material is changed to tungsten from graphite. In the structure, outer target adopts the ITER-like monoblock, bracing and cooling structure adopts incorporate cassette. After establishing the cooling structure of EAST tungsten divertor, the flows-solid coupling heat conduction model of water-pipes is used to analyze the heat dissipation situation of outside target in the form of turbulent flow. While the cooling system comes to failure, a series of heat flux value 3MW·m-2, 5MW·m-2, 8MW·m-2, 10MW·m-2 are applied in the hazardous area to analyze transient conditions and real temperature distribution. The results shows that if the water flows at 4m·s-1, the cooling pipes can withstand the heat flux with peak power in 10MW·m-2. It can well meet the needs in heat dissipation of EAST experiment.

Key words: EAST, Tungsten divertor, Thermal hydraulic analysis, Failure

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