한국산업융합학회 논문집 (Journal of the Korean Society of Industry Convergence)

  • 제22권2호
  • /
  • Pages.173-181
  • /
  • 2019
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  • 1226-833X(pISSN)
  • /
  • 2765-5415(eISSN)
한국산업융합학회 (The Korean Society of Industry Convergence)
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T-분지관이 부착된 벤튜리관의 유동특성과 응축수 유입에 대한 수치해석 연구

A numerical study on the flow characteristics and condensed water inflow in the Venturi tube with T-branch tube

  • 김승일 (금오공과대학교 기계공학과 대학원) ;
  • 박상희 (금오공과대학교 기계공학과) ;
  • 황정규 (금오공과대학교 기계공학과 대학원)
  • Kim, S.I. (Dept. of mechanical engineering, Kumoh National Institute of Technology) ;
  • Park, S.H. (Dept. of mechanical engineering, Kumoh National Institute of Technology) ;
  • Hwang, J.G. (Dept. of mechanical engineering, Kumoh National Institute of Technology)
  • 투고 : 2018.11.15
  • 심사 : 2019.03.08
  • 발행 : 2019.03.31
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초록

This study was carried out numerically to investigate the flow characteristics in the Venturi tube with $90^{\circ}$ T-branch tube and the inflow of condensed water into the Venturi tube from the branch tube. In this study, the diameter of the branch tube(1, 2, 3mm) and the neck diameter of the Venturi tube(0.3, 0.9, 1.5mm) were varied. The flow rate of the water at the Venturi tube inlet is 80cc/min and the water temperature is 288K. The condensed water temperature at the branch tube inlet is 355K. It was found that the velocity and pressure of the fluid near the branch point in the Venturi tube were more dependent on the diameter of the Venturi tube than the diameter of the branch tube. The temperature of the mixed water at the exit of the Venturi tube was the highest when the Venturi tube's neck diameter is 0.9mm and the branch tube diameter is 2mm. This means that the condensed water is flowing well through the branch tube.

키워드

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Fig. 1 Steam generator(a) and Condensed water recovery system(b)

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Fig. 2 A numerical model for the Venturi tube with T-type branch tube

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Fig. 6 Velocity distribution in the Venturi tube for diameter of branch tube

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Fig. 7 Pressure distribution in the Venturi tube for diameter of branch tube

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Fig. 8 Temperature distribution in the Venturi tube for diameter of branch tube

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Fig. 3 Velocity distribution of the Venturi tube and the branch tube for the diameter of branch tube

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Fig. 4 Pressure distribution of the Venturi tube and the branch tube for the diameter of branch tube

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Fig. 5 Temperature distribution of the Venturi tube and the branch tube for the diameter of branch tube

참고문헌

  1. E. M. Sparrow, R. G. Kemink, "Heat Transfer Downstream of a Fluid Withdrawal Branch in a Tube" Journal of Heat Transfer, vol.101, pp. 23-28, (1979). https://doi.org/10.1115/1.3450923
  2. R. E. Hayes, K. Nandakumar and H. Nasr-El-Din, "Steday Laminar Flow in a 90 degree planar Branch" Computer & Fluids, vol. 17, no. 4, pp. 538-553, (1989).
  3. Suh, S. H., Yoo, S. S., Roh, H. W., "Numerical Analysis of Branch Flows for Newtonian and Non-Newtonian Fluids" The Korean Society of Mechanical Engineers vol.18, no. 10, pp. 2762-2772, (1994)
  4. V. S. Neary and F. Sotiropoulos, "Numerical investigation of laminar flows through 90-degree diversions of rectangular cross-section" Journal of Computer & Fluids, vol.25, no. 2, pp. 95-158, (1996). https://doi.org/10.1016/0045-7930(95)00030-5
  5. Kim, Y. M., Son, H. J., "Numerical Study of the Flow Field in a 90-Degree T-Branch of Square Cross-Section" Journal of the Society for Aeronautical & Space Sciences, vol.25, no. 2, pp. 171-176, (1997).
  6. Park, S. H., Kim, S. K., Ha M. Y., "Numerical Study on Flow and Heat Transfer Characteristics of Pipes with Various Shapes" Trans. Koean. Soc. Mech. Eng. B, vol.37, no. 11, pp. 999-1007, (2013). https://doi.org/10.3795/KSME-B.2013.37.11.999