Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Liquid entrainment through a large-scale inclined branch pipe on a horizontal main pipe

  • Gu, Ningxin (Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University) ;
  • Shen, Geyu (Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University) ;
  • Lu, Zhiyuan (Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University) ;
  • Yang, Yuenan (Patent Examination Cooperation (Beijing) Center of the Patent Office, SIPO) ;
  • Meng, Zhaoming (Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University) ;
  • Ding, Ming (Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University)
  • Received : 2018.11.08
  • Accepted : 2019.11.06
  • Published : 2020.06.25
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Abstract

T-junction structures play an important role in nuclear power plant systems. Research on liquid entrainment is mostly based on small-scale branch pipes (d/D ≤ 0.2) and attention paid to large-scale branch pipes (0.33 < d/D < 1) is insufficient. Accordingly, this study implements a series of experiments on the liquid entrainment of T-junction with different angles (32.2°,47.9°,62.3°,90°) through a large-scale branch (d/D = 0.675). The onset liquid entrainment is related to the gas phase Froude number Frg, the dimensionless gas chamber height hb/d and the branch pipe angle 𝜃. As Frg increases, hb/d also rises. With a constant hb/d, the onset liquid entrainment changes from droplets entrainment by the gas phase to that by the rising liquid film. The steady-state liquid entrainment is related to w3g, h/d and 𝜃. With constant w3g and h/d, the branch quality grows as the branch angle increases. With a certain h/d, the branch quality increases, as the w3g number increases.

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References

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