• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Numerical Analysis of Droplet Flow Regime in Gas-Liquid Two-Phase Flow using Particle Method

Research Project

Project/Area Number 13650167
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

KOSHIZUKA Seiichi  The University of Tokyo, School of Engineering, Associate Professor, 大学院・工学系研究科, 助教授 (80186668)

Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥4,100,000 (Direct Cost: ¥4,100,000)
Fiscal Year 2002: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2001: ¥2,500,000 (Direct Cost: ¥2,500,000)
KeywordsGas-liquid two-phase flow / Droplet / Surface tension / Numerical analysis / Particle method / Critical Weber number / Interfacial area / MPS method / 気液三相流 / ドライアウト / 沸騰遷移 / 液滴の分裂 / 液滴流 / 臨界ウエーバー数
Research Abstract

Two-fluid model has been used for gas-liquid two-phase flow analysis. Governing equations of gas and liquid phases are simultaneously solved with correlations expressing interfacial interactions. These correlations are obtained by experiments. Numerical analysis is difficult for them. In particular, interfacial area is an important parameter to determine the interactions. Grids are not necessary in particle method, so that fragmentation and coalescence of fluids as well as large deformation of interfaces can be analyzed. In the present study, the critical Weber number by which the interfacial area is evaluated in the droplet flow regime is analyzed by the particle method.
The particle method used here is MPS (Moving Particle Semi-implicit) method which has been developed by the present researcher. A new model for surface tension is developed to analyze single droplet behavior. Vibration of a square droplet is calculated and the oscillating period agrees with that of the analytical solution. Flow around a droplet is calculated and the pressure distribution on the droplet agrees with those of the past studies. Droplet breakup is driven by the pressure distribution and suppressed by surface tension. Both processes are verified. It is also clarified that more than 100 particles are necessary to analyze the droplet behavior accurately.
It is known that the droplet breakup is governed by a non-dimensional number called Weber number, which is the ratio of the driving force to the suppressing force. Critical Weber number gives the limit of droplet breakup. The breakup does not occur when the Weber number is below the critical value. The droplet behavior is calculated for various Weber numbers using the MPS method. The results show that the critical Weber number is 13. This agrees with experimental data. Therefore, it is concluded that the critical Weber number is successfully analyzed by the MPS method.

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] K.Nomura: "Numerical Analysis of Droplet Breakup Behavior using Particle Method"J. Nucl. Sci. Technol.. 38. 1057-1064 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 越塚誠一: "粒子法による流れの数値解析"ながれ. 21. 230-239 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [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)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S.Koshizuka: "Particle Method for Incompressible Flow with Free Surface"Proc. ASME 2002 Fluids Engineering Division Summer Meeting (FEDSM'02). No.31154 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Shibata: "Numerical Analysis of Jet Breakup Behavior using Particle Method"Proc. 5th JSME-KSME Fluids Engineering Conference. 1144-1148 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] R.-Q.Duan: "Droplet Breakup under Impulsive Acceleration using Moving Particle Semiimplicit Method"Proc. 11th Int. Conf. Nucl. Eng.(ICONE-11). ICONE11-36029 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K. Nomura: "Numerical Analysis of Droplet Breakup Behavior using Particle Method"J. Nucl. Sci. Technol.. 38. 1057-1064 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S. Koshizuka: "Numerical Simulation of Fluid Dynamics using Particle Method"Nagare. 21. 230-239 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [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)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S. Koshizuka: "Particle Method for Incompressible Flow with Free Surface"Proc. ASME 2002 Fluids Engineering Division Summer Meeting (FEDSM'02). FEDSM2002-31154. (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K. Shibata: "Numerical Analysis of Jet Breakup Behavior using Particle Method"Proc. 5th JSME-KSME Fluids Engineering Conference. 1144-1148 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] R.-Q. Duan: "Droplet Breakup under Impulsive Acceleration using Moving Particle Semi-implicit Method"Proc. 11th Int. Conf. Nucl. Eng. (ICONE-11). ICONE11-36029. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 越塚誠一: "粒子法による流れの数値解析"ながれ. 21・3. 230-239 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 越塚誠一: "粒子法による流体運動の解析と可視化"土木学会誌. 87・7. 11-13 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 越塚誠一: "粒子法による自由液面流れの数値解析"日本造船学会誌. 871. 29-33 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] S.Koshizuka: "Particle Method for Incompressible Flow with Free Surface"Proc. ASME 2002 Fluids Engineering Division Summer Meeting (FEDSM'02). No.31154 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] S.Koshizuka: "Numerical Analysis of Large Deformation of Free Surface using Particle Method"Proc. 8th Symposium on Nonlinear and Free-Surface Flows. 41-44 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] R.Duan: "Numerical Simulation of Drop Breakup by MPS Method"第7回計算工学講演会論文集. 7. 691-694 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] K.Nomura, S.Koshizuka, Y.Oka, H.Obata: "Numerical Analysis of Droplet Breakup Behavior using Particle Method"J. Nucl. Sci. Technol.. 38(12). 1057-1064 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] R.Duan, S.Koshizuka, Y.Oka: "Numerical Simulation of Drop Breakup by MPS Method"日本原子力学会2001年秋の大会予稿集II. 574 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 越塚誠一, 岡芳明: "粒子法によるジェットブレークアップの数値解析"第14回計算力学講演会講演論文集. 373-374 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] R-Q.Duan, S.Koshizuka, Y.Oka: "Numerical Investigation: Effect of Density Ratio on the Critical Weber Number of Droplet Breakup"日本原子力学会2002年春の年会要旨集. (発表予定). (2002)

    • Related Report
      2001 Annual Research Report

URL: 

Published: 2001-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi