Effects of tip clearance flow on rotating stall inception process in an axial compressor rotor

Kazutoyo Yamada, Hiroaki Kikuta, Masato Furukawa, Satoshi Gunjishima, Yasunori Hara

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Flow fields near rotating stall inception in a low-speed axial compressor rotor with two different tip clearances have been investigated by instantaneous measurements of casing wall pressure distributions using 30 high response pressure transducers and by detached eddy simulations (DES) using 120 million grid points. It is found that the stall inception process in the large tip clearance case is dominated by the breakdown of the rotor tip leakage vortex, in contrast to the spike-type stall inception in the small tip clearance case which is dominated by the leading-edge separation near the rotor tip. The vortex breakdown induces the large oscillation of the tip leakage vortex with its unsteady nature, resulting in the low-pressure regions in the instantaneous casing wall pressure field and the high pressure fluctuation region on the pressure side of the adjacent blade tip in the ensemble-averaged casing wall pressure field. The large blockage effect due to the tip leakage vortex breakdown causes the rotating disturbance propagating in the circumferential direction, which can appear and disappear with a slight change in the flow rate.

Original languageEnglish
Pages (from-to)900-916
Number of pages17
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume79
Issue number801
DOIs
Publication statusPublished - Jul 15 2013

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compressor rotors
rotating stalls
turbocompressors
clearances
Compressors
Rotors
Vortex flow
wall pressure
casing
pressure distribution
vortex breakdown
leakage
vortices
rotors
Pressure transducers
blade tips
Pressure distribution
Flow fields
pressure sensors
leading edges

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Effects of tip clearance flow on rotating stall inception process in an axial compressor rotor. / Yamada, Kazutoyo; Kikuta, Hiroaki; Furukawa, Masato; Gunjishima, Satoshi; Hara, Yasunori.

In: Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, Vol. 79, No. 801, 15.07.2013, p. 900-916.

Research output: Contribution to journalArticle

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