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ArtikelTheoretical Analysis of Fluid Forces on An Open-Type Centrifugal Impeller in Whirling Motion  
Oleh: Tsujimoto, Yoshinobu ; Hiwata, Akira
Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Fluids Engineering vol. 124 no. 2 (2002), page 342-347.
Topik: motion; theoretical analysis; fluid forces; open - type; centrifugal; impeller; whirling; motion
  • Perpustakaan Pusat (Semanggi)
    • Nomor Panggil: JJ89.3
    • Non-tandon: 1 (dapat dipinjam: 0)
    • Tandon: tidak ada
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Isi artikelFor turbomachines operating at supercritical shaft speed, it is important to understand the characteristics of unsteady fluid forces on the impeller that occur due to shaft vibration. The present paper treats the forces on an open - type centrifugal impeller in whirling motion using unsteady potential flow theory. The whirling forces obtained agree reasonably with experimental results and show a destabilizing region at small positive whirl. It was found that the destabilizing force is due to the forces on the hub caused by temporal change in the thickness of the flow channel, with minor contribution of tip leakage on the destabilization.
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