偏滤器钨铜单体水冷模块热特性数值模拟研究
Numerical Investigation of Thermal Characteristics of the Tungsten Copper Monoblock of a Water Cooling Divertor
查看参考文献19篇
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文摘
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超导托卡马克偏滤器稳态热流密度在10 MW/m~2以上,是核聚变反应堆中的关键部件。目前钨铜水冷结构在超导托卡马克偏滤器中的应用最为广泛。这个结构中,无氧铜管与铬锆铜铜管交界面存在温度最高点。如果长期处在高温状态,该处结构将首先被烧坏,从而导致部件失效,影响反应堆的稳定性和安全性。因此,该点成为关键,研究它的温度变化规律,对超导托卡马克核聚变反应堆设计具有重要意义。本文利用Fluent的VOF多相流模型对偏滤器内部的水冷结构进行了模拟,选取圆管和方管水冷单元,研究不同管道尺寸和不同热流密度条件下关键点的温度变化和流道的阻力特性,获得了较优的冷却管结构,为超导托卡马克偏滤器的设计提供了指导。 |
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其他语种文摘
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The steady state heat flux of the superconducting tokamak divertor, which is the key part of the nuclear fusion reactor, is above 10 MW/m~2. At present, the tungsten (W) monoblock cooled by water flowing in the CuCrZr tube is widely applied to the superconducting tokamak divertor. In this structure, there is the highest temperature point at the interface between the oxygen free copper tube and the CuCrZr tube, which is the key point in the divertor design. The operation under the extreme condition of high temperature for long time would firstly cause the burnout of the key point, resulting in the dysfunction of the cooling unit and the reactor. Studying the characteristic of the temperature variation of the key point is of great significance to the design of the superconducting tokamak nuclear fusion reactor. In this paper, the VOF multiphase flow model in Fluent is used to simulate the water cooling structure of the W monoblock of the divertor. The water cooling unit with both round tube and square tubes under different pipe sizes and different heat fluxes are studied, the temperature characteristics of the key point and the pressure drop characteristics in the tube are revealed, and the better cooling tube structure is found. The work could provide the guidance for the design of the superconducting tokamak divertor. |
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来源
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工程热物理学报
,2016,37(11):2372-2377 【核心库】
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关键词
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偏滤器
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超导托卡马克
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VOF模型
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数值模拟
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水冷
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地址
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1.
南京航空航天大学航空宇航学院人机与环境工程系, 南京, 210016
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中国科学院合肥物质科学研究院, 合肥, 230031
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0253-231X |
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学科
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能源与动力工程;原子能技术 |
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基金
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国家自然科学基金资助项目
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文献收藏号
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CSCD:5840035
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