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

Hironori Honda, Linlin Cao, Satoshi Watanabe, Shinichi Tsuda, Akinori Furukawa

Research output: Contribution to conferencePaper

Abstract

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.

Original languageEnglish
Publication statusPublished - Jan 1 2015
EventASME/JSME/KSME 2015 Joint Fluids Engineering Conference, AJKFluids 2015 - Seoul, Korea, Republic of
Duration: Jul 26 2015Jul 31 2015

Other

OtherASME/JSME/KSME 2015 Joint Fluids Engineering Conference, AJKFluids 2015
CountryKorea, Republic of
CitySeoul
Period7/26/157/31/15

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Axial flow
Rotors
Pumps
Secondary flow
Computer simulation
Stators
Conservation
Momentum
Hydraulics
Specifications

All Science Journal Classification (ASJC) codes

  • Fluid Flow and Transfer Processes

Cite this

Honda, H., Cao, L., Watanabe, S., Tsuda, S., & Furukawa, A. (2015). Numerical investigation on performance of contra-rotating axial flow pump with different rear rotor design. Paper presented at ASME/JSME/KSME 2015 Joint Fluids Engineering Conference, AJKFluids 2015, Seoul, Korea, Republic of.

Numerical investigation on performance of contra-rotating axial flow pump with different rear rotor design. / Honda, Hironori; Cao, Linlin; Watanabe, Satoshi; Tsuda, Shinichi; Furukawa, Akinori.

2015. Paper presented at ASME/JSME/KSME 2015 Joint Fluids Engineering Conference, AJKFluids 2015, Seoul, Korea, Republic of.

Research output: Contribution to conferencePaper

Honda, H, Cao, L, Watanabe, S, Tsuda, S & Furukawa, A 2015, 'Numerical investigation on performance of contra-rotating axial flow pump with different rear rotor design' Paper presented at ASME/JSME/KSME 2015 Joint Fluids Engineering Conference, AJKFluids 2015, Seoul, Korea, Republic of, 7/26/15 - 7/31/15, .
Honda H, Cao L, Watanabe S, Tsuda S, Furukawa A. Numerical investigation on performance of contra-rotating axial flow pump with different rear rotor design. 2015. Paper presented at ASME/JSME/KSME 2015 Joint Fluids Engineering Conference, AJKFluids 2015, Seoul, Korea, Republic of.
Honda, Hironori ; Cao, Linlin ; Watanabe, Satoshi ; Tsuda, Shinichi ; Furukawa, Akinori. / Numerical investigation on performance of contra-rotating axial flow pump with different rear rotor design. Paper presented at ASME/JSME/KSME 2015 Joint Fluids Engineering Conference, AJKFluids 2015, Seoul, Korea, Republic of.
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