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

The Korean Society of Mechanical Engineers (대한기계학회)
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Numerical Analysis of Turbulent Flow around Tube Bundle by Applying CFD Best Practice Guideline

CFD 우수사례 지침을 적용한 관 다발 주위의 난류유동 수치해석

  • Lee, Gong Hee (New Reactor Regulation Division, Korea Institute of Nuclear Safety) ;
  • Bang, Young Seok (New Reactor Regulation Division, Korea Institute of Nuclear Safety) ;
  • Woo, Sweng Woong (New Reactor Regulation Division, Korea Institute of Nuclear Safety) ;
  • Cheng, Ae Ju (New Reactor Regulation Division, Korea Institute of Nuclear Safety)
  • 이공희 (한국원자력안전기술원 건설원자력규제단) ;
  • 방영석 (한국원자력안전기술원 건설원자력규제단) ;
  • 우승웅 (한국원자력안전기술원 건설원자력규제단) ;
  • 정애주 (한국원자력안전기술원 건설원자력규제단)
  • Received : 2013.01.09
  • Accepted : 2013.07.23
  • Published : 2013.10.01
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Abstract

In this study, the numerical analysis of a turbulent flow around both a staggered and an inline tube bundle was conducted using ANSYS CFX V.13, a commercial CFD software. The flow was assumed to be steady, incompressible, and isothermal. According to the CFD Best Practice Guideline, the sensitivity study for grid size, accuracy of the discretization scheme for convection term, and turbulence model was conducted, and its result was compared with the experimental data to estimate the applicability of the CFD Best Practice Guideline. It was concluded that the CFD Best Practice Guideline did not always guarantee an improvement in the prediction performance of the commercial CFD software in the field of tube bundle flow.

본 연구에서는 상용 전산유체역학 소프트웨어인 ANSYS CFX V.13을 사용하여 정상상태, 비압축성, 등온으로 가정된 엇갈림 관 다발 및 일렬 관 다발 주위의 난류유동을 계산하였다. 계산 결과는 전산유체역학 우수사례 지침에 근거하여 격자크기, 대류항 차분법의 정확도 및 난류모델에 대한 민감도 연구에 활용되었고 실험 결과와 정량적으로 비교함으로써 우수사례 지침의 적용성을 평가하였다. 결론적으로 전산유체역학 우수사례 지침이 관 다발 유동 분야에서 상용 전산유체역학 소프트웨어의 예측성능 향상을 반드시 보증하지 않음을 확인하였다.

Keywords

References

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  1. Comparative Study of Commercial CFD Software Performance for Prediction of Reactor Internal Flow vol.37, pp.12, 2013, https://doi.org/10.3795/KSME-B.2013.37.12.1175