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Numerical Analysis of Dryout Phenomena in Light Water-Cooled Nuclear Reactors using Particle Method

Research Project

Project/Area Number 14380232
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Nuclear engineering
Research InstitutionThe University of Tokyo

Principal Investigator

OKA Yoshiaki  The University of Tokyo, School of Engineering, Professor, 大学院・工学系研究科, 教授 (40011225)

Co-Investigator(Kenkyū-buntansha) KOSHIZUKA Seiichi  The University of Tokyo, School of Engineering, Professor, 大学院・工学系研究科, 教授 (80186668)
ISHIWATARI Yuki  The University of Tokyo, School of Engineering, Research Associate, 大学院・工学系研究科, 助手 (10334319)
Project Period (FY) 2002 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥14,300,000 (Direct Cost: ¥14,300,000)
Fiscal Year 2004: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2003: ¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2002: ¥8,000,000 (Direct Cost: ¥8,000,000)
KeywordsNuclear Reactor / Thermal-hydraulics / Gas-Liquid Two-Phase Flow / Numerical Analysis / Particle Method / Dryout / Boiling Transition / Droplet
Research Abstract

In Boiling Water Reactors (BWRs), annular mist flow appears in the upper part of the core. Dryout is a limiting condition of thermalhydraulic design. It is important to analyze dry out accurately for the reactor design and safety. Moving Particle Semi-implicit (MPS) method has been developed by the present researchers. The MPS method does not need meshes, so that droplet separation and merging are easily analyzed. In the present study, direct simulation of dry out was carried out using the MPS method.
Dryout phenomenon consists of the deposition process where droplets are absorbed by the liquid film flowing on the fuel reds, and the entrainment process where droples are released from the liquid film. First, single droplet behavior in the deposition process was analyzed by the MPS method. When the droplet diameter is small or the impact velocity is slow, the droplet is totally absorbed by the liquid film. When the droplet diameter is large or the impact velocity is high, the droplet impact disturbs the liquid film and new droplets are generated. This new droplets (re-entrainment) cannot be neglected in the Boiling Water Reactor (BWR) conditions.
A particle-mesh hybrid method was developed based on the finite volume method and the particle method (MPS method). Gas-liquid two-phase flow can be analyzed efficiently using the hybrid method. A low-Reynolds number k-ε model was incorporated into this hybrid method. Simulation of liquid film flow and instability on the fuel rods in BWR cores using the hybrid method.
In this study, numerical methods have been developed to analyze the basic processes in the dryout phenomenon m the BWR conditions. Anew knowledge about the re-entrainment process was also obtained.

Report

(4 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • Research Products

    (28 results)

All 2005 2004 2003 Other

All Journal Article (13 results) Book (3 results) Publications (12 results)

  • [Journal Article] A Hybrid Particle-Mesh Method for Viscous, Incompressible, Multiphase Flows2005

    • Author(s)
      J.Liu, S.Koshizuka, Y.Oka
    • Journal Title

      J.Comput.Phys. 202

      Pages: 65-93

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Numerical Simulation of Liquid Drop Deposition in Annular-Mist Flow Regime of Boiling Water Reactor2004

    • Author(s)
      H.Xie, S.Koshizuka, Y.Oka
    • Journal Title

      J.Nucl.Sci.Technol. 41

      Pages: 569-578

    • NAID

      10012348556

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Modelling of a Single Drop Impact onto Liquid Film Using Particle Method2004

    • Author(s)
      H.Xie, S.Koshizuka, Y.Oka
    • Journal Title

      Int.J.Num. Methods Fluids 45

      Pages: 1009-1023

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Effect of Splash on the Deposition and Re-entrainment in Annular Mist Flow2004

    • Author(s)
      H.Xie, S.Koshizuka, Y.Oka, T.Yamauchi
    • Journal Title

      Proc 6th Int.Conf. Nuclear Thermal Hydraulics, Operations and Safety (NUTHOS-6)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Development and Validation of a Particle-mesh Method for Incompressible Multiphase Flows2004

    • Author(s)
      J.Liu, S.Koshizuka, Y.Oka
    • Journal Title

      Proc 6th Int.Conf. Nuclear Thermal Hydraulics, Operations and Safety (NUTHOS-6)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Modelling of a Single Drop Impact onto Liquid Film Using Particle Method2004

    • Author(s)
      H.Xie, S.Koshizuka, Y.Oka
    • Journal Title

      Int.J.Num.Methods Fluids 45

      Pages: 1009-1023

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Effect of Splash on the Deposition and Re-entrainment in Annular Mist Flow2004

    • Author(s)
      H.Xie, S.Koshizuka, Y.Oka, T.Yamauchi
    • Journal Title

      Proc 6th Int.Conf.Nuclear Thermal Hydraulics, Operations and Safety (NUTHOS-6) N6P195

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Development and Validation of a Particle-mesh Method for Incompressible Multiphase Flows2004

    • Author(s)
      J.Liu, S.Koshizuka, Y.Oka
    • Journal Title

      Proc 6th Int.Conf.Nuclear Thermal Hydraulics, Operations and Safety (NUTHOS-6) N6P190

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Effect of Splash on the Deposition and Re-entrainment in Annular Mist Flow2004

    • Author(s)
      H.Xie, S.Koshizuka, Y.Oka, T.Yamauchi
    • Journal Title

      Proc 6th Int.Conf. Nuclear Thermal Hydraulics, Operations and Safety(NUTHOS-6)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Development and Validation of a Particle-mesh Method for Incompressible Multiphase Flows2004

    • Author(s)
      J.Liu, S.Koshizuka, Y.Oka
    • Journal Title

      Proc 6th Int.Conf. Nuclear Thermal Hydraulics, Operations and Safety(NUTHOS-6)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Moving Particle Methods for Multi-physics Simulation2004

    • Author(s)
      S.Koshizuka, Y.Oka
    • Journal Title

      Proc 6th Int.Conf. Nuclear Thermal Hydraulics, Operations and Safety(NUTHOS-6)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Numerical Simulation of a Single Drop Impact on Liquid Surface using Particle Method2003

    • Author(s)
      H.Xie, S.Koshizuka, Y.Oka
    • Journal Title

      Proc. Int.Conf. Global Environment and Advanced Nuclear Power Plants (GENES4/ANP2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Numerical Simulation of a Single Drop Impact on Liquid Surface using Particle Method2003

    • Author(s)
      H.Xie, S.Koshizuka, Y.Oka
    • Journal Title

      Proc.Int.Conf.Global Environment and Advanced Nuclear Power Plants (GENES4/ANP2003) Paper-1019

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Book] 粒子法2005

    • Author(s)
      塚越誠一
    • Total Pages
      144
    • Publisher
      丸善
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Book] Ryushiho2005

    • Author(s)
      S.Koshizuka
    • Publisher
      Maruzen
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Book] 粒子法2005

    • Author(s)
      越塚誠一
    • Total Pages
      144
    • Publisher
      丸善
    • Related Report
      2004 Annual Research Report
  • [Publications] R.-Q.Duan: "Numerical and Theoretical Investigation of Effect of Density Ratio on the Critical Weber Number of Droplet Breakup"J.Nucl.Sci.Technol.. 40(7). 501-508 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] R.-Q.Duan: "Two-dimensional Simulation of Drop Deformation and Breakup at around the Critical Weber Number"Nucl.Eng.Des.. 225. 37-48 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] H.Xie: "Numerical Simulation of a Single Drop Impact on Liquid Surface using Particle Method"Proc.Int.Conf.Global Environment and Advanced Nuclear Power Plants (GENES4/ANP2003). 1019 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] S.Koshizuka: "Advanced analysis of complex thermal-hydraulic phenomena using particle method"Proc.Int.Conf.Global Environment and Advanced Nuclear Power Plants (GENES4/ANP2003). 1165 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] H.Xie: "Numerical Simulation of Drop Impact using Particle Method"日本流体力学会年会2003講演論文集. 102-103 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 解衡: "Modeling of Wetting Effects on the Liquid Droplet Impingement using Particle Method"第53回理論応用力学講演会論文集(NCTAM2004). 127-128 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] S.Heo: "Numerical Analysis of Boiling on High Heat-Flux and High Subcooling Condition using MPS-MAFL"Int. J. Heat Mass Transfer. 45. 2633-2642 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] S.Koshizuka: "Advanced Numerical Analysis for Complex Thermal-Hydraulics in Nuclear Engineering"Proc. Int. Congress of Advanced Nuclear Power Plants (ICAPP). No.1204 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] K.Shibata: "Numerical Analysis of Jet Breakup Behavior using Particle Method"Proc. 5th JSME-KSME Fluids Engineering Conference. 1144-1148 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 柴田和也: "粒子法によるジェット分散挙動の数値解析"第7回計算工学講演会論文集. 7. 695-698 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] H.Xie: "Numerical Analysis of Droplet Impact upon Solid Surface with Wettability"日本原子力学会2003春の年会. (to be published). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] L.Jie: "Computation of Multiphase Flow by Coupling the MIPS Method with Mesh Method"日本原子力学会2003春の年会. (to be published). (2003)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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