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首页> 外文期刊>International Journal of Heat and Mass Transfer >Two-group phase distribution characteristics for air-water flow in 5 × 5 vertical rod bundle channel with mixing vane spacer grids
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Two-group phase distribution characteristics for air-water flow in 5 × 5 vertical rod bundle channel with mixing vane spacer grids

机译：5×5垂直杆束通道中的空气流动的两组相分布特性，具有混合叶片间隔栅格

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摘要

The phase distribution in rod bundle channel was associated with the heat transfer coefficient, flow resistance and critical heat flux, which was of great significance for the design and safe operation of nuclear reactor and steam generator. In order to clarify the phase distribution characteristics and reveal the effect of mixing vane spacer grid (MVSG) in two-group air-water flow in rod bundle channel, the adiabatic upward air-water two-phase flow experiments were conducted in 5 × 5 rod bundles with MVSGs and the detailed local two-phase flow parameters were acquired with miniaturized four-sensor conductivity probe (MFSCP). Some interesting phenomena were reported: Group Ⅰ and Ⅱ void fraction profiles showed the core-peak features; Group I void fraction almost stayed at the region from 0.2 to 0.3 for two-group air-water flow at current flow conditions; the dissipation length of MVSG was larger than 32.1 L/D at current two-group flow conditions; and the influencing region of MVSG was divided into at least three regions along the axial direction with the flow development for current flow conditions.
机译：杆束通道中的相分布与传热系数，流动阻力和临界热通量相关联，这对于核反应堆和蒸汽发生器的设计和安全操作具有重要意义。为了阐明相分配特性并揭示混合叶片间隔栅格（MVSG）在杆束通道中的两组空水流动中的效果，在5×5中进行了绝热向上的空气水水两相流实验利用小型化四传感器电导率探针（MFSCP），获取具有MVSG的杆束和详细的局部两相流程参数。报告了一些有趣的现象：Ⅰ组和Ⅱ组空隙分数型材显示核心峰特征;第i组空隙部分几乎保持在电流流动条件下的两组空水流量0.2至0.3的区域;在电流的两组流动条件下，MVSG的耗散长度大于32.1L / d;并且，MVSG的影响区域沿轴向分为至少三个区域，其流动显影用于电流流动条件。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2021年第9期|121444.1-121444.17|共17页
  • 作者

    Quan-Yao Ren; Liang-Ming Pan; Zengping Pu; Fawen Zhu; Hui He;

  • 作者单位

    Science and Technology on Reactor System Design Technology Laboratory Chengdu 610041 China;

    Key Laboratory of Low-grade Energy Utilization Technologies and Systems (Chongqing University) Ministry of Education Chongqing 400044 China;

    Science and Technology on Reactor System Design Technology Laboratory Chengdu 610041 China;

    Science and Technology on Reactor System Design Technology Laboratory Chengdu 610041 China;

    Department of Nuclear Science and Engineering Shanghai Jiao Tong University Shanghai 202240 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Void fraction; interfacial area concentration; spacer grid; rod bundle; two-group; phase distribution;

    机译：空隙分数;界面区域浓度;垫片网格;杆束;两组;相分布;

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