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Effect of Flow in the Rotor on the Performance of a Sirocco Fan

Research Project

Project/Area Number 09650211
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

ADACHI Tsutomu  Osaka Sangyo University, Professor, 工学部, 教授 (50029394)

Co-Investigator(Kenkyū-buntansha) SUGITA Naohiro  Osaka Sangyo University, Assistant, 工学部, 助手 (90268251)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1999: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1998: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1997: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsSirocco fan / Flow angle and velocity / Flow in the blade passage / Measurement of flow velocity / Performance of fan / シロッコファン / 流れ計測
Research Abstract

Effects of blade shape on the performance of a Sirocco fan was measured using 9 runner blades with different blade shape in the same casing. These 9 different runner blades have inner diameter of 130 mm, outer diameter of 160 mm, and 46 mm in width. Considering from the velocity triangles at the blade inlet, the blade inlet angles are to be taken 10〜15°. For the runner blades with these values the efficiency was good, but large discharge couldn't be obtained. Inlet angle must be taken in the range of 75〜90°. The outlet angle is desired to be 150〜160°. For these runner blades flow flows along the blade surface, though it once separates at the leading edge and reattaches at the trailing edge. The flow velocity takes large value at the pressure surface and smaller values at the suction surface at the center of the blade width. Deviation angle, i.e., the difference of blade outlet angle and flow outlet angle, takes zero value, if proper design is conducted. The ratio of wake width to the blade pitch becomes larger, if the blade thickness is larger. If the blade outlet angle is larger than 160°, the outlet flow circulate. Inlet vortex arise because of the sudden flow turning at the blade inlet. The extent of inlet vortex is influenced by the inclination angle of blade. The inclination ratio,i.e., the ratio of blade inclination angle θand the inlet angle βィイD21ィエD2 is important. The maximum values of pressure and discharge can be obtained at (θ/βィイD21ィエD2) =0.35. Considering the above affairs, the values βィイD21ィエD2)=75〜90°, (θ/βィイD21ィエD2) =0.35 and βィイD22ィエD2=150〜160°are suitable for the blade design. The blade thickness must be thinner as possible.

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 安達 勤、杉田 尚弘: "シロッコファンの性能と内部流れ"日本機械学会関西支部卒業研究発表講演会. 96 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 安達 勤、杉田 尚弘: "シロッコファンの性能と内部流れ"第42回ターボ機械協会総会講演会. 37-42 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 安達 勤、杉田 尚弘: "シロッコファンの特性に及ぼす羽根形状の影響"日本機械学会第75期定時総会講演会. (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tsutomu Adachi, Naohiro Sugita: "Flow and its Performance of a Sirocco Fan"Preprint of the 42th Turbomachinery Society of Japan. (in Japanese). 37-42 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tsutomu Adachi, Naohiro Sugita: Preprint of the Japan Society of Mechanical Engineers No.004-1. (in Japanese). 6-33-6-34 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 安達 勤、杉田 尚弘: "シロッコファンの性能と内部流れ"日本機械学会関西支部卒業研究発表会講演会. 96 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 安達 勤、杉田 尚弘: "シロッコファンの性能と内部流れ"第42回ターボ機械協会総会講演会. 37-42 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 安達 勤、杉田 尚弘: "シロッコファンの特性に及ぼす羽根形状の影響"日本機械学会第75期定時総会講演会. (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 安達勤,杉田尚弘他: "シロッコファンの性能と内部流れ" 日本機械学会関西学生会卒業研究発表講演会. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 安達勤: "Effects of surface roughness on the universal Strouhal number over the wide.Reynolds number range" Journal of Wind Engineering and Industrial Aerodynamics. 67-71. 339-412 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 安達勤(ほか3名): "Effects of operating conditions on the Ilorv in the moving blade passage of single stage axial-flowfan" International Journal of Rotating Machinery. Vol,13、No.4. 269-276 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 安達勤: "Turbomachinery Fluid Dynamics and Heat Transfer" Marcel Deber Inc, 349-365(440) (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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