Numerical Study of Rotating Stall in A Pump Vaned Diffuser  

Oleh:

Tsujimoto, Yoshinobu ; Sano, Takeshi ; Matsushima, Tatsuhito ; Nakamura, Yuki ; Yoshida, Yoshiki

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Fluids Engineering vol. 124 no. 2 (2002), page 363-370.
Topik: diffuser; numerical study; rotating stall; pump; diffuser

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ89.3 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

This paper treats the flow instabilities in a vaned diffuser by using CFD. A commercial code with the standard - turbulence model was used for the present work. It was found that the flow instabilities in the vaned diffuser : i. e., rotating stall, alternate blade stall, and asymmetric stall, could be simulated by the present calculations. These instabilities were observed in a range with negative slope of the pressure performance curve of the diffuser. The rotating stall onset flow rate is larger for the case with larger clearance between the impeller and diffuser vanes.

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