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Numerical Simulation of Upward Subcooled Boiling Flow of Refrigerant-113 in a Vertical Concentric Annulus

机译:垂直同心环中的制冷剂-113向上脱沸流量的数值模拟

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In this paper, a modified two-fluid model considering variable liquid properties and saturationtemperature variation was adapted to accurately simulate the process of subcooled boiling flow.The calculations were performed by a CFD code CFX-10 with extended user definedFORTRAN. The refrigerant-113 boiling flow experiments from reference were used to validatethe modified two-fluid model of subcooled boiling flow. The predicted void fraction and liquidtemperature distribution show better agreements with the experimental data. Especially, as thewall heat flux increases, the bubble boundary layer will increase and the liquid temperaturegradient at near-wall region will be more smooth.
机译:在本文中,考虑可变液体特性和饱和度温度变化的改进的双流体模型适于精确模拟过冷沸腾流程的过程。通过CFD码CFX-10进行计算,具有扩展用户SymentRan。从参考的制冷剂-113沸腾的流动实验用于验证改性的过冷沸腾流动的修改的两种流体模型。预测的空隙分数和液态化学分布显示了与实验数据更好的协议。特别是,随着壁的热通量增加,气泡边界层将增加,近壁区域的液体温度更加光滑。

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