MISC

2003年1月10日

極低比速度セミオープン羽根車の内部流れに関する研究

ターボ機械
  • 崔 永都
  • ,
  • 黒川 淳一
  • ,
  • 松井 純
  • ,
  • 今村 博

31
1
開始ページ
43
終了ページ
52
記述言語
日本語
掲載種別
出版者・発行元
日本工業出版

In the range of very low specific-speed (ns≦100 [m, m3/min, rpm]), performance of a centrifugal pump is much different from that of a normal ns pump. In order to obtain a basic knowledge of pump performance, the internal flow in a semi-open impeller is measured by PIV method and calculated by a commercial CFD code. The results show that strong reverse flow at an impeller outlet is formed and reduces tangential velocity of the absolute flow at an impeller outlet. In the case of β2=90°impeller, a large vortex is formed in the impeller passage at partial flow rate and causes a performance instability. The reverse flow at an impeller outlet brings low angular momentum into an impeller and causes a sharp drop of tangential velocity just before the impeller outlet, which results in a increase of slip factor in the case of β2=30°impeller.

リンク情報
CiNii Articles
http://ci.nii.ac.jp/naid/10010221883
CiNii Books
http://ci.nii.ac.jp/ncid/AN00004836
URL
http://id.ndl.go.jp/bib/6417393
URL
http://hdl.handle.net/10131/3763
ID情報
  • ISSN : 0385-8839
  • CiNii Articles ID : 10010221883
  • CiNii Books ID : AN00004836

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