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A FLOW CHARACTERISTICS FOR Y-CONNECTION IN HIGH-REYNOLDS-NUMBER FLOW SYSTEM

고레이놀즈수 유동 장치에서 Y형 이음의 유동 특성

  • Received : 2012.06.26
  • Accepted : 2013.06.05
  • Published : 2013.06.30

Abstract

In nuclear power plant, the reactor cooling system has maintained high-Reynolds-number flow above 1E+07 to cool a heat generated by the reactor. To minimize uncertainty for flow calibration, it is necessary to simulate the high Reynolds' number flow. Y-connection is selected to connect four (4) parallel high flow circulation pumps for maintaining the high flow rate. This paper describes the characteristics for Y-connection by computer flow simulation. It was confirmed through the results that the pressure loss of the Y-connection was lower than that of T-connection. Also as the connection angle of Y-connection was small, as the pressure loss was low.

Keywords

References

  1. 2009, Furuichi, N., Teraol, Y. and Takamoto, M., "Actual Flow Calibration of a Feedwater Flowmeter Using a High Reynolds Number Facility at NMIJ," J of Nuclear Engineering and Design, Vol.239(7), p.1305.
  2. 2011, Park, Y.-C., "Technical Consulting and Computational Analysis for Ultra Sonic Flow Meter Calibration Facility Design," TR101-2011 of Chang-Yun Mechanical Technology, pp.2-3.
  3. 2004, Potter, M.C. and Scott, E.P., An Introduction to Thermodynamics, Fluid Mechanics and Heat Transfer, Thomson.
  4. 2002, Park, Y.-C., Cho, Y.-G., W, J.-S. and Kim, Y.-G., "Evaluation of Water Quality in Case of Using Pond Water as Supply Water of Secondary Cooling System in HANARO," Proceedings of the Korean Nuclear Society Autumn Meeting, p.113.
  5. 2002, Cho, K.-R., Basic of Pump Design, Dae-Yong Co., p.17.
  6. 2010, ANSYS WORKbench 13.0 Mechanical User's Guide, ANSYS.
  7. 1985, Flow Network Analysis, 5.0C, User's Manual, Kelix Software Co..
  8. 1981, Hooper, W.B. "The Two-K Method Predicts Head Losses in Pipe Fittings," J of Chem. Engr. Aug. 24. pp.97-100.
  9. 1999, Park, Y.-C., and Park, J.-H., "Design and Test of ASME Strainer for Primary Cooling System in HANARO," J of Fluid Machinery, Vol.2, No.3, pp.24-29.
  10. 1983, Hydraulic Institute Standards for Centrifugal Rotary & Reciprocating Pumps, 14th. Edition, Hydraulic Inst., p.105.