Visualization of Flow toward the Exit Duct in a Centrifugal Blower Casing

• ITABASHI Akiyoshi

  University of Tokushima

• NAKASE Yoshiyuki

  University of Tokushima

• FUKUTOMI Junichiro

  University of Tokushima

• SENOO Yasutoshi

  Miura Institute of Research & Development

Bibliographic Information

Other Title

• 238 遠心送風機ケーシング内の吐出管へ向かう流れの可視化

Abstract

Connection between low flow rate characteristics and internal-flow condition in a centrifugal blower casing of commercial design was investigated by static pressure measurement and flow visualization using oil-film and depth-tuft methods. Inward flow oil-film pattern depicted on the top and bottom plates in scroll was basically unchanged over the whole flow rate. At the inlet region of exit duct, where sudden pressure rise occurred, reverse flow region was already observed on the top plate and the upper part of the side wall at flow rate φ/φ _d=0.61. This separation zone grew with decreasing flow rate. It was suggested that condition of flow from scroll toward the exit duct was closely connected to the low flow rate characteristics of blower.

Journal

• Journal of the Visualization Society of Japan

  Journal of the Visualization Society of Japan 15 (Supplement1), 335-338, 1995

  The Visualization Society of Japan

Details

• CRID: 1390282679595394688
• NII Article ID: 10002673588
• NII Article ID: 130003443100
• NII Book ID: AN10374478
• DOI: 10.3154/jvs.15.supplement1_335
• ISSN: 1884037X
• ISSN: 09164731
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed