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http://dx.doi.org/10.5139/JKSAS.2014.42.4.326

Aerodynamic Characteristics Analysis of Small Two-Stage Turbo Blower Using CFD  

Seo, Seungjae (Department of Mechanical Engineering, Hanyang University)
Ryu, Minhyoung (Department of Mechanical Engineering, Hanyang University)
Cho, Leesang (Department of Mechanical & System Engineering, Hansung University)
Cho, Jinsoo (School of Mechanical Engineering, Hanyang University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.42, no.4, 2014 , pp. 326-335 More about this Journal
Abstract
Aerodynamic characteristics of the small two-stage turbo blower were investigated using commercial CFD tool(ANSYS CFX Ver. 14.5) in this paper. Turbo blower, which is a centrifugal type of turbomachinery, is used in various industries. It is used for application that required high static pressure rising at relatively small volumetric flow rate. In order to understand the mechanism of static pressure rising, the aerodynamic characteristics of the small two-stage turbo blower are analyzed at high rotating speed in this study. The k-${\omega}$ SST turbulence model, which is good at prediction of adverse pressure gradient flows, was applied. The CFD results of the turbo blower are validated by performance test. The static pressure rising of the turbo blower is nonlinearly increased over the first stage and the second stage. The secondary flow occurred at guide vanes, between the casing and the first impeller shroud, and the bottom of the impeller disk. As a result, It is required that whole fluid area is analyzed to predict aerodynamic characteristics of small two-stage turbo blower. and the result should be selected with considering for error from experiment and CFD.
Keywords
Small Two-Stage Turbo Blower; Computational Fluid Dynamics; Aerodynamic Characteristics;
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Times Cited By KSCI : 2  (Citation Analysis)
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