A Numerical Investigation on The Volute/Diffuser Interaction Due to The Axial Distortion at The Impeller Exit  

Oleh:

Engeda, Abraham ; Cave, Mike ; Liberti, Jean-Luc Di ; Fahua, Gu

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Fluids Engineering vol. 123 no. 3 (2001), page 475-483.
Topik: axial diffusion; numerical investigation; volute; diffuser; interaction; axial distoriton; impeller exit

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ89.2 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

A numerical simulation is performed on a single - stage centrifugal compressor using the commercially available CFD software, CFX - TASCflow. The steady flow is obtained by circumferentially averaging the exit fluxes of the impeller. Three runs are made at the design condition and off - design conditions. The predicted performance is in agreement with experimental data. The flow details inside the stationary components are investigated, resulting in a flow model describing the volute / diffuser interaction at design and off - design conditions. The recirculation and twin vortex structure are found to explain the volute loss increase at lower and higher mass flows, respectively.

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