Numerical investigation on performance of contra-rotating axial flow pump with different rear rotor design

Hironori Honda, Linlin Cao, Satoshi Watanabe, Shin Ichi Tsuda, Akinori Furukawa

研究成果: Contribution to conferencePaper査読

2 被引用数 (Scopus)

抄録

In the industrial fields, the development of higher specific speed pumps is demanded with the importance of energy and resource savings. We believe that contra-rotating axial flow pumps with a rear rotor rotating opposite side to a front rotor offer a good solution against it. This type of the pump shows better performance and more compact machine size relatively than the conventional rotor-stator type under the same design specifications. In the present paper, the effect of rear-rotor speed on the hydraulic efficiency of contra-rotating axial flow pump is investigated by using numerical simulations. We redesigned several rear rotors with the different rotational speeds of Nr=600, 900 1123min-1 determined based on onedimensional stream-tube theory with considering the momentum conservation laws. The evaluation of their performance is carried out by numerical simulations using ANSYS CFX. According to simulation results, it is found that the reduced rear-rotor speed concept brings about preferable performance with the increased efficiency. However, in the passage of re-designed rear rotors, secondary flow is clearly observed at the corner of hub and blade suction surfaces, indicating the possibility of further performance improvement with more appropriate blade design.

本文言語英語
出版ステータス出版済み - 1 1 2015
イベントASME/JSME/KSME 2015 Joint Fluids Engineering Conference, AJKFluids 2015 - Seoul, 大韓民国
継続期間: 7 26 20157 31 2015

その他

その他ASME/JSME/KSME 2015 Joint Fluids Engineering Conference, AJKFluids 2015
国/地域大韓民国
CitySeoul
Period7/26/157/31/15

All Science Journal Classification (ASJC) codes

  • 流体および伝熱

フィンガープリント

「Numerical investigation on performance of contra-rotating axial flow pump with different rear rotor design」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル