1524 Air Entrainment into a Suction Pipe Inserted into a Sump

• NAKATANI Yuki

  Department of Mechanical Engineering, Doshisha University

• FUNAKI Jiro

  Department of Mechanical Engineering, Doshisha University

• HIRATA Katsuya

  Department of Mechanical Engineering, Doshisha University

Bibliographic Information

Other Title

• 1524 水槽に挿入された吸込管への空気吸込(J11-5 流体連成振動(2),J11 流体関連の騒音と振動)

Abstract

Regarding the air entrainment into a suction pipe which is vertically inserted into a suction sump across a free surface, critical submergence S_c are specified concerning six parameters, such as the Froude number Fr, the Reynolds number Re, the Weber number We, back clearance X, sump breadth B and bottom clearance Z. Here, all parameters are non-dimensionalized by suction-pipe outer diameter D and suction-pipe intake velocity V_i. Consequently, the authors confirmed that the surface-tension effect is negligible at We≥20, and that the viscous effect become enough small at Re≥3.2×10^4, while Fr effect is significant. Z/D effect also becomes small at Z/D≥2.5. Most of geometric effects can be explained on the basis of the Fr-S_c/D relation.

Journal

• The proceedings of the JSME annual meeting

  The proceedings of the JSME annual meeting 2007.7 (0), 113-114, 2007

  The Japan Society of Mechanical Engineers

Keywords

• vortices
• pumps
• water tanks
• two-phase flow
• suction sump
• suction pipe

Details

• CRID: 1390282681040009344
• NII Article ID: 110007084402
• DOI: 10.1299/jsmemecjo.2007.7.0_113
• ISSN: 24331325
• Web Site: https://www.jstage.jst.go.jp/article/jsmemecjo/2007.7/0/2007.7_113/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed