Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Theoretical Study on the Flow of Refilling Stage in a Safety Injection Tank

안전주입탱크의 재충수 단계 유동에 대한 이론해석

  • Park, Jun Sang (School of Mechanical and Automotive Engineering, Halla Univ.)
  • 박준상 (한라대학교 기계자동차공학부)
  • Received : 2017.06.22
  • Accepted : 2017.07.28
  • Published : 2017.10.01
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Abstract

In this study, a theoretical analysis was performed to the flow of refilling stage in a safety injection tank, which is the core cooling system of nuclear power plant in an emergency. A theoretical model was proposed with a nonlinear governing equation defining on the flow of the refilling process of the coolant. Utilizing the Taylor-series expansion, the $1^{st}$ - order approximation flow equation was obtained, along with its analytic solution of closed type, which could predict accurately the variations of free surface height and flow rate of the coolant. The availability of theoretical result was confirmed by comparing with previous experimental results.

본 연구에서 원자력 발전용 비상노심냉각 장치인 안전주입탱크의 재충수 단계에 대한 유량에 대한 이론해석을 수행했다. 이론해석을 통해 재충수 단계 유동에 대한 이론 모형을 정립하고 재충수 단계에 대한 비선형 유량방정식을 구하고, 테일러 급수 전개법을 통해 근사유량방정식과 냉각수의 자유표면 높이변화와 유량변화를 예측할 수 있는 이론해들을 구했다. 기존연구에 나와 있는 실험과 비교하여 이론해의 유용성을 검증했다.

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References

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