Rotating Choke and Choked Surge in an Axial Pump Impeller

Rotating Choke and Choked Surge in an Axial Pump Impeller

Unlike usual turbopump inducers, the axial flow pump tested operates very stably at design flow rate without rotating cavitation nor cavitation surge. Flow visualization suggests that this is because the tip cavity smoothly extends into the flow passage without the interaction with the leading edge...

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Veröffentlicht in:Turbomachinery 2009, Vol.37(9), pp.517-525
Hauptverfasser: WATANABE, Toshifumi, SATO, Hideyoshi, HENMI, Yasuhiko, HORIGUCHI, Hironori, KAWATA, Yutaka, TSUJIMOTO, Yoshinobu
Format: Artikel
Sprache:eng ; jpn
Schlagworte:
Cavitation
Cavitation Instability
Choked Surge
Inducer
Pump
Rotating Choke
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container_end_page 525
container_issue 9
container_start_page 517
container_title Turbomachinery
container_volume 37
creator WATANABE, Toshifumi
SATO, Hideyoshi
HENMI, Yasuhiko
HORIGUCHI, Hironori
KAWATA, Yutaka
TSUJIMOTO, Yoshinobu
description Unlike usual turbopump inducers, the axial flow pump tested operates very stably at design flow rate without rotating cavitation nor cavitation surge. Flow visualization suggests that this is because the tip cavity smoothly extends into the flow passage without the interaction with the leading edge of the next blade. However, at low flow rate and low cavitation number, choked surge and rotating choke were observed. Their correlation with the performance curve under cavitation is discussed and their instantaneous flow fields are shown.
doi_str_mv 10.11458/tsj.37.517
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language eng ; jpn
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source J-STAGE Free; EZB-FREE-00999 freely available EZB journals
subjects Cavitation
Cavitation Instability
Choked Surge
Inducer
Pump
Rotating Choke
title Rotating Choke and Choked Surge in an Axial Pump Impeller
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