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

Research on Flow Control of Dense Gas-Solid Flows

Research Project

Project/Area Number 13450075
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Fluid engineering
Research InstitutionOsaka University

Principal Investigator

TSUJI Yutaka  Osaka University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (10029233)

Co-Investigator(Kenkyū-buntansha) KAWAGUCHI Toshihiro  Osaka University, Graduate School of Engineering, Research Associate, 大学院・工学研究科, 助手 (80234045)
TANAKA Toshitsugu  Osaka University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (90171777)
YOSHIOKA Muneyuki  Osaka University, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (10029267)
Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥15,500,000 (Direct Cost: ¥15,500,000)
Fiscal Year 2002: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2001: ¥14,700,000 (Direct Cost: ¥14,700,000)
Keywordsmulti-phase flow / gas-solid flow / fluidized bed / standpipe flow / flow control
Research Abstract

The objective of this study is the control of meso-scale structures in dense gas-solid flows, First, the effect of gas pulsation on the bubble motion in a fluidized bed was investigated numerically and experimentally. It was found both in the calculation and the experiment that characteristic bubbles were generated when the injected gas velocity was pulsated at a certain frequency band. When the pressure drop through the gas distributor was considered the calculated bubble motion agree with that in the corresponding experiment. Gas pulsation is one of the promissing ways to control the bubble motion in the fluidized bed, and the calculation taking account of the pressure drop through the gas distributor can predict the effect of the gas pulsation on the bubble motion.
Next, the plug motion in a standpipe flow was studied. When the drag coefficient is modified taking account of the wall effect the predicted pulg length and the plug velocity agree well with those in the corresponding experiment. The length, velocity, frequency of breakup of plugs are investigated statistically by using the calculated results. A plug flow model for a one-dimensional steady standpipe flow was proposed.
Finally, a similarity model was proposed, in which the motion of particles are simulated by using larger model-particles. The similarity model was applied to the numerical simulation of a fluidized bed, and the effect of the model-particle size on the bubble motion was investigated.

Report

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

    (20 results)

All Other

All Publications (20 results)

  • [Publications] Toshihiro Kawaguchi: "Discrete Particle Analysis of 2D Pulsating Fluidized Bed"Proceedings of the 4th International Conference on Multiphase Flow. (CD-ROM). 838 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 三好 淳之: "気流脈動による流動層内粒子流動構造の制御"日本機械学会論文集(B編). 68. 115-122 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Toshihiro Kawaguchi: "DEM Simulation of 2-D Fluidized Bed using Similarity Model"Proceedings of the 3rd International Conference on Discrete Element Method. 167-171 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 川口 寿裕: "スタンドパイプ内粒子濃度変動の測定およびDEM解析"第7回流動層シンポジウム講演論文集. 428-435 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 水島 祐之輔: "2次元流動層内流動におよぼす気流脈動の影響(実験およびDEMによる流動構造解析)"日本混相流学会年会講演会2002講演論文集. 151-152 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 川口 寿裕: "相似則モデルによる流動層内流動現象のDEMシミュレーション(モデル粒子径の影響について)"第8回流動層シンポジウム講演論文集. 390-397 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Kawaguchi et al.: "Discrete Particle Analysis of 2D Pulsating Fluidized Bed"Proceedings of the 4th International Conference on Multiphase Flow. Paper No.838(in CD-ROM). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] A.Miyoshi et al.,: "Particle Flow Control by Pulsating Gas Injection in Gas-Solid Fluidized Bed"Transactions of JSME (B). 115-122 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Kawaguchi et al.: "DEM Simulation of 2-D Fiuidized Bed using Similarity Model"Proceedings of the 3rd International Conference on Discrete Element Method. 167-171 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Kawaguchi et al.: "Measurement and DEM Analysis of Density Fluctuation in Standpipe Flow"Proceedings of the 7th SCEJ Symposium on Fluidization. 428-435 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Y.Mizushima et al.: "Effect of Gas Pulsation on Flow in 2D Fluidized Bed (Experiment and DEM Analysis)"Proceedings of JSMF Annual Meeting. 151-152 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Kawaguchi et al.: "DEM Simulation of 2D Fluidized Bed using Similarity Model (Effect of Diameter of Model Particle)"Proceedings of the 8th SCEJ Symposium on Fluldization. 390-397 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 水島祐之輔: "空気分散器の圧力損失が流動層内流動におよぼす影響について(DEM解析と実験の比較)"日本機械学会関西支部第78期定時総会講演会講演論文集. (発表予定). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 堀井 優: "スタンドパイプ内流れの1次元流動構造(実験とDEMによる流動解析およびプラグ流動モデルの開発)"日本機械学会関西支部第78期定時総会講演会講演論文集. (発表予定). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 川口寿裕: "相似則モデルによる流動層内流動現象のDEMシミュレーション(モデル粒子系の影響について)"Proceedings of the 8th SCEJ symposium on Fluidization. 390-397 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Toshihiro Kawaguchi: "DEM Simulation of 2-D Fluidized Bed Using Similarity Model"Proceedings of the 3rd International Conference of Discrete Element Method. 167-171 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 水島祐之輔: "2次元流動層内流動におよぼす気流脈動の影響(実験およびDEMによる流動解析)"日本混相流学会年会講演会2002講演論文集. 151-152 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 清岡 敬: "格子ボルツマン法による粒子流動の数値解析"日本機械学会関西支部第77期定時総会講演会講演論文集. (発表予定). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] 下田岳秀: "格子ボルツマン法を用いた粒子運動の数値解析(壁面衝突問題への応用)"日本機械学会関西支部第77期定時総会講演会講演論文集. (発表予定). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] 川口寿裕: "スタンドパイプ内粒子濃度変動の測定およびDEM解析"Proceedings of The 7th SCEJ Symposium on Fluidization. 428-435 (2001)

    • 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