NUCLEAR TECHNIQUES, Volume. 47, Issue 9, 090606(2024)

Effect of air gap on the flow and heat transfer behavior in rectangular channel of fuel plate during bubbling conditions

Chuandong LIU, Wei XU, Hui HE, and Xiaojing LIU*
Author Affiliations
  • Nuclear Science and Engineering School, Shanghai Jiao Tong University, Shanghai 200240, China
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    Figures & Tables(14)
    Overall schematic diagram of the model
    Schematic diagram of partial fuel plate bubbling
    Diagram of flow-solid interface Y+
    Comparison of temperature on the centerline of the fuel plate under different mesh numbers
    Temperature distribution contours of fuel plates under different bubbling conditions(a) No bubbling, (b) Solid bubbling, (c) Gas bubbling
    Temperature change curves of fuel plate along the flow direction under gas bubbling (a) and solid bubbling (b)
    Variation curves of longitudinal temperature of fuel plate under gas bubbling (a) and solid bubbling (b)
    Heat flux distribution contours of fuel plates under different bubbling conditions(a) No bubbling, (b) Solid bubbling, (c) Gas bubbling
    Heat flux density variation curves of fuel plate in the bubble center under gas bubbling (a) and solid bubbling (b)
    Comparison diagram of heat flux proportion on both sides of the fuel plate
    Deformation map of bubbling fuel plate
    • Table 1. Model geometric parameters

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      Table 1. Model geometric parameters

      参数名

      Parameter name

      参数值

      Parameter value

      参数名

      Parameter name

      参数值

      Parameter value

      模型长度Model length / mm200

      流道高度Channel

      height / mm

      0.35
      模型宽度Model width / mm60入口流速Inlet velocity / m∙s-10.5
      模型厚度Model thickness / mm1入口温度Inlet temperature / K289
    • Table 2. Comparison between simulation and experimental results

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      Table 2. Comparison between simulation and experimental results

      Case

      No.

      入口流速

      Inlet velocity

      / m

      入口温度

      Inlet temperature

      / ℃

      实验出口温度Experimental outlet temperature / ℃

      热功率

      Heat power

      / W

      仿真出口温度Simulated outlet temperature / ℃相对误差 Relative error / %
      10.1012.6024.20873.4724.350.62
      20.2012.6018.30858.9118.360.33
      30.3015.9019.80880.6119.700.51
      40.4016.2019.20903.1619.200.00
      50.5015.8018.30940.9918.310.05
    • Table 3. Heat transfer coefficients at the bubbling center of the fuel plate under three bubble conditions

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      Table 3. Heat transfer coefficients at the bubbling center of the fuel plate under three bubble conditions

      单位

      Unit

      热通量

      Heat flux / W∙m-2

      壁面温度

      Wall temperature / K

      冷却剂温度Coolant temperature / K

      换热系数

      Heat transfer coefficient / W∙m-2∙K-1

      无鼓泡

      No bubbling

      9.5×104296.2291.82.16×104

      固体鼓泡

      Solid bubbling

      1.2×105296.1291.02.35×104

      气体鼓泡

      Gas bubbling

      5.7×104293.3290.92.38×104
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    Chuandong LIU, Wei XU, Hui HE, Xiaojing LIU. Effect of air gap on the flow and heat transfer behavior in rectangular channel of fuel plate during bubbling conditions[J]. NUCLEAR TECHNIQUES, 2024, 47(9): 090606

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    Paper Information

    Category: NUCLEAR ENERGY SCIENCE AND ENGINEERING

    Received: Mar. 21, 2024

    Accepted: --

    Published Online: Nov. 13, 2024

    The Author Email:

    DOI:10.11889/j.0253-3219.2024.hjs.47.090606

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