The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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Numerical Study of the Averaging BDFT(bidirectional flow tube) Flow Meter on the Applicability in the Fouling Condition

수치해석을 이용한 평균 양방향 유동 튜브 유량계의 파울링 환경 적용성 연구

  • Park, JongPil (Pusan National University, School of Mechanical Engineering, Energy Systems Major) ;
  • Jeong, JiHwan (Pusan National University, School of Mechanical Engineering, Energy Systems Major) ;
  • Kang, KyongHo (Korea Atomic Energy Research Institute, Nuclear Safety Research Department) ;
  • Baek, WonPil (Korea Atomic Energy Research Institute, Nuclear Safety Research Department) ;
  • Yun, ByongJo (Pusan National University, School of Mechanical Engineering, Nuclear Systems Major)
  • 박종필 (부산대학교 기계공학부 에너지시스템전공) ;
  • 정지환 (부산대학교 기계공학부 에너지시스템전공) ;
  • 강경호 (한국원자력연구원 원자력안전연구본부) ;
  • 백원필 (한국원자력연구원 원자력안전연구본부) ;
  • 윤병조 (부산대학교 기계공학부 원자력시스템전공)
  • Received : 2013.04.16
  • Accepted : 2013.07.08
  • Published : 2013.08.01
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Abstract

Most of the nuclear power plants(NPPs) adopts pressure difference type flow meters such as venturi and orifice meters for the measurement of feedwater flow rates to calculate reactor thermal power. However, corrosion products in the feedwater deposits on the flow meter by fouling as operating time goes. These effects lead to severe errors in the flow indication and then determination of reactor thermal power. The averaging BDFT, which has developed by Yun et al., has a potentiality to minimize this problem thanks to its inherent measurement principle. Therefore, it is expected that the averaging BDFT can replace the venturi meter for the feedwater pipe of steam generator of NPPs. The present work compares the amplification factor, K, based on CFD calculation against the K obtained from experiments in order to confirm whether a commercial CFD code can be applicable to the evaluation of characteristic for the averaging BDFT. In addition to this, the simulations to take into account of fouling effect are also carried out by rough wall option. The results show that the averaging BDFT is a promising flow meter for the accurate measurement of flow rates in the fouling condition of the NPPs.

Keywords

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