한국전산유체공학회지 (Journal of computational fluids engineering)

한국전산유체공학회 (Korean Society of Computational Fluids Engineering)
권호 표지
DOI QR코드

DOI QR Code

IRWST 환형관 실험장치 내의 수소화염 가속현상에 대한 CFD 해석 연구

CFD ANALYSIS FOR HYDROGEN FLAME ACCELERATION IN THE IRWST ANNULUS TEST FACILITY

  • 강형석 (한국원자력연구원, 열수력안전연구부) ;
  • 하광순 (한국원자력연구원, 중대사고.중수로안전연구부) ;
  • 김상백 (한국원자력연구원, 중대사고.중수로안전연구부) ;
  • 홍성완 (한국원자력연구원, 중대사고.중수로안전연구부)
  • Kang, H.S. (Thermal Hydraulics Safety Research Division, Korea Atomic Energy Research Institute) ;
  • Ha, K.S. (Severe Accident & PHWR Safety Research Division, Korea Atomic Energy Research Institute) ;
  • Kim, S.B. (Severe Accident & PHWR Safety Research Division, Korea Atomic Energy Research Institute) ;
  • Hong, S.W. (Severe Accident & PHWR Safety Research Division, Korea Atomic Energy Research Institute)
  • 투고 : 2012.07.25
  • 심사 : 2012.09.17
  • 발행 : 2012.09.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

We developed a preliminary CFD analysis methodology to predict a pressure build up due to hydrogen flame acceleration in the APR1400 IRWST on the basis of CFD analysis results for test data of hydrogen flame acceleration in a scaled-down test facility performed by Korea Atomic Energy Research Institute. We found out that ANSYS CFX-13 with a combustion model of the so-called turbulent flame closure and a model constant of A = 5.0, a grid model with a hexahedral cell length of 5.0 mm, and a time step size of $1.0{\times}10^{-5}$ s can be a useful tool to predict the pressure build up due to the hydrogen flame acceleration in the test results. Through the comparison of the simulated results with the test results, we found out that the proposed CFD analysis methodology enables us to predict the peak pressure within an error range of about ${\pm}29%$ for the hydrogen concentration of 19.5%. However, the error ranges of the peak pressure for the hydrogen concentration of 15.4% and 18.6% were about 66% and 51%, respectively. To reduce the error ranges in case of the hydrogen concentration of 15.4% and 18.6%, some uncertainties of the test conditions should be clarified. In addition, an investigation for a possibility of flame extinction in the test results should be performed.

키워드

참고문헌

  1. 2005, Kim, J.T., et al., "Numerical Analysis of the Hydrogen-Steam Behavior in the APR1400 Containment during a Hypothetical Total Loss of Feed Water Accident," J. of Comput. Fluids Eng., Vol.10, No.3, pp.9-18.
  2. 2007, Suh, N.D., "Applicability of $7{\lambda}$ DDT Criterion in the IRWST of APR1400," Proc. of KNS Autumn Meeting, Jeju, Republic of Korea.
  3. 1997, Kaneshige, M. and Shepherd, J.E., "Detonation Database," Report FM-97-8, GALCIT, Explosion Dynamics Laboratory
  4. 2012, Kang, H.S., "Development of a CFD Analysis Methodology of H2 Explosion Accidents for Evaluating the Safety Distance between a VHTR and a H2 Production Facility," Ph.D. Thesis, KAIST, Republic of Korea.
  5. 1997, Dorofeev, S.B., et al., "Large Scale Combustion Test in the RUT Facility: Experimental Study, Numerical Simulations and Analysis on Turbulent Deflagration and DDT," Proc. of SMiRT-14, Lyon, France, pp.2463-2471.
  6. 2007, Mahaffy, J., et al., "Best Practice Guidelines for the Use of CFD in Nuclear Reactor Safety Applications," Nuclear Energy Agency Committee on the Safety of Nuclear Installations, NEA/CSNI/R(2007)5.
  7. 2012, Kim, S.B., et al., "Development of Assessment Technology for Hydrogen Burn and Fission Product Behavior in Containment," Research Report, KAERI/RR-3454/2011, KAERI, pp.80-95.
  8. 2002, "APR1400 Standard Safety Analysis Report," KEPCO.
  9. 1979, Strehlow, R.A., "The Blast Wave Generated by Spherical Flames," Combustion and Flame, 35, pp.297-310. https://doi.org/10.1016/0010-2180(79)90035-X
  10. 2010, Movahed, M.A., "Recommendation for Maximum Allowable Mesh Size for Plant Combustion Analyses with CFD Codes," Proc. of CFD4NRS-3 Workshop, Washington D.C., U.S.A.
  11. 2005, Kuo, K.K., Principles of Combustion, 2nd, John Wiley & Sons, inc, New Jersey.
  12. 2011, ICEM CFD-13 Manual, ANSYS Inc.
  13. 1993, Modest, M.F., Radiative Heat Transfer, 2nd, McGraw-Hill, New York.
  14. 1988, Heywood, Internal Combustion Engine Fundamentals, McGraw-Hill, New York.
  15. 1998, Clanet, C. and Searby, G., "First Experimental Stduy of the Darrieus-landau Instability," Physical Review Letters, Vol.80, No.17, pp.3867-3870. https://doi.org/10.1103/PhysRevLett.80.3867
  16. 2012, COM3D v4.2, Tutorial Guide, KIT.
  17. 2011, ANSYS-13 Manual, ANSYS Inc.
  18. 2012, Kotchourko, A., et al., "ISP-49 on Hydrogen Combustion," Nuclear Energy Agency Committee on the Safety of Nuclear Installations, NEA/CSNI/R(2011)9.
  19. 2000, Kjaldman, L., Brink, A., and Hupa, M., "Micro Mixing Time in the Eddy Dissipation Concept," Combust. Sci. and Tech., Vol.154, pp.207-227. https://doi.org/10.1080/00102200008947277