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2012 Fiscal Year Final Research Report

Elucidation of Multiple-scale Mass Transfer Mechanism from Wall toComplex Turbulent Flow and Challenge to FAC Control Technique

Research Project

  • PDF
Project/Area Number 23760821
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Nuclear engineering
Research InstitutionTohoku University

Principal Investigator

EBARA Shinji  東北大学, 大学院・工学研究科, 准教授 (30325485)

Project Period (FY) 2011 – 2012
Keywords流れ加速型腐食 / 旋回流 / オリフィス / 速度変動
Research Abstract

In order to clarify the relationship between flow-accelerated corrosion and scales of fluid motion, i.e., frequencies in the turbulent motion, visualization experiments for fluid flow by using PIV method were conducted and the flow fields were analyzed in detail. When the levels of power spectrum densities of fluctuating velocities obtained from the experiments were compared to the profile of pipe wall thinning obtained from an actual plant, their trend showed a fair agreement with each other. Furthremore, they showed a better agreement when a low-pass filtering operation was done for the fluctuating velocities. However, Reynolds stress profile showed a much more better agreement with the actual profile of pipe wall thinning.

  • Research Products

    (4 results)

All 2012 2011

All Presentation (4 results)

  • [Presentation] オリフィス下流複雑流動場における速度変動周波数特性の配管減肉への影響2012

    • Author(s)
      江原真司、矢内宏樹、橋爪秀利
    • Organizer
      日本保全学会第9回学術講演会
    • Place of Presentation
      東京
    • Year and Date
      20120725-27
  • [Presentation] EXPERIMENTAL INVESTIGATION OF INFLUENCE OF INLET FLOW CONDITIONS ON SWIRLING FLOW GENERATED IN A THREE-DIMENSIONALLYCONNECTED DUAL ELBOW2012

    • Author(s)
      T. Kubo, S. Ebara, H. Hashizume
    • Organizer
      The 15th International Symposium on Flow Visualization
    • Place of Presentation
      Minsk、Belarus
    • Year and Date
      20120625-28
  • [Presentation] オリフィス下流における配管減肉への乱流速度変動周波数の影響2012

    • Author(s)
      江原真司、矢内宏樹、橋爪秀利
    • Organizer
      第17回動力・エネルギー技術シンポジウム
    • Place of Presentation
      福岡
    • Year and Date
      20120621-22
  • [Presentation] オリフィス下流乱流場での配管減肉に対する速度変動周波数の影響評価2011

    • Author(s)
      矢内宏樹、江原真司、橋爪秀利
    • Organizer
      日本原子力学会東北支部第35回研究交流会
    • Place of Presentation
      仙台
    • Year and Date
      2011-12-09

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Published: 2014-09-25  

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