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Study of Swirling Flow Pneumatic Conveying System

Research Project

Project/Area Number 03650152
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Fluid engineering
Research InstitutionKYUSHU INSTITUTE OF TECHNOLOGY

Principal Investigator

TOMITA Yuji  Kyushu Institute of Technology, Faculty of Engineering, Professor, 工学部, 教授 (60039104)

Project Period (FY) 1991 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1992: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1991: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsMultiphase Flow / Swirling Flow / Guide Vane / Pneumatic Conveying System / Swirl Number / Pressure Drop / Low Air Velocity / Numerical Simulation / 鉛直管 / 流動様式 / 輸送限界 / 粒子間衝突 / k-2モデル / 水平管 / スワ-ル数 / 入口区間 / 粒子速度 / 付加圧力損失
Research Abstract

A swirling flow pneumatic conveying system for granular particles is investigated both for horizontal and for vertical pipelines. The pipelines consist of 80mm inside diameter tubes and the length is about 12m. The swirling flow is generated by using axial guide vanes of different flow angle and is found to be characterized by a swirl number for gas flow. An empirical procedure is given to predict the characteristics of swirling flow in a long pipe. Polyethylene, polystyrene and polyvinyl chloride pellets were used for test particles. Total pressure drop including loss due to guide vanes, additional pressure drop due to the particles, flow pattern of particles, particle velocity and particle concentration profiles were examined for different air flow rates, particle loadings and intensities of inlet swirl. The is found out to be effective in the inlet region of pipeline, and is able to reduce transport air velocity as compared with the axial flow pneumatic conveying with the same power consumption. A three dimensional numerical simulation of swirling flow pneumatic conveying was carried out for similar flow conditions as experimental ones in horizontal flow by considering particle collision and using k-epsilon model. The effect of particles on gas equations was considered in the source term. For dilute flow, present simulation was found valid as for particle velocity, particle concentration and average air velocity profiles.

Report

(3 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] 李 輝,富田 侑嗣,船津 勝也: "水平管における旋回流空気輸送の研究(第1報,圧力損失と流動様式)" 日本機械学会論文集B編. 58. 1599-1604 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 李 輝,富田 侑嗣: "水平管における旋回流空気輸送の研究(第2報,粒子速度と濃度分布)" 日本機械学会論文集B編. 59. 411-418 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 李 輝,富田 侑嗣: "水平管における旋回流空気輸送の研究(第3報,動力係数と付加圧力損失係数)" 日本機械学会論文集B編. 59. (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] LI Hui, Yuji tomita, Katsuya FUNATSU: "Research of Swirling Flow Pneumatic Conveying System in a Horizontal Pipeline(1st Report, Pressure Drop and Flow Patterns)" Trans. JSME. Vol.58. 1599-1604 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] LI Hui, Yuji TOMITA: "Research of Swirling Flow Pneumatic Conveying System in a Horizontal Pipeline(2nd Report, Particle Velocity and Concentration Profiles)" Trans. JSME. Vol.59. 411-418 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] LI Hui, Yuji TOMITA: "Research of Swirling Flow Pneumatic Conveying System in a Horizontal Pipeline(3rd Report, Coefficients of Power Consumption and Additional Pressure Drop)" Trans. JSME. Vol.59.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 李 輝 富田 侑嗣 船津 勝也: "水平管における旋回流空気輸送の研究(第1報,圧力損失と流動様式)" 日本機械学会論文集B編. 58. 1599-1604 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 李 輝,富田 侑嗣: "水平管における旋回流空気輸送の研究(第2報,粒子速度と濃度分布)" 日本機械学会論文集B編. 59. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 李 輝,富田 侑嗣: "水平管における旋回流空気輸送の研究(第3報,動力係数と付加圧力損失係数)" 日本機械学会論文集B編. 59. (1993)

    • Related Report
      1992 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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