Frontiers in Energy
>> 2008,
Volume 2,
Issue 4
doi:
10.1007/s11708-008-0071-9
Numerical analysis of rotating stall characteristics
in vaneless diffuser with large width-radius ratio
School of Mechanical Engineering, Shanghai Jiao Tong University;
Available online: 2008-12-05
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Abstract
A two-dimensional model, where the influence of wall boundary layers is neglected and inlet jet-wake velocity patterns are prescribed, was applied to simulate one vaneless diffuser with a large width-radius ratio. The impact of diffuser length, impeller blade number, etc. on the rotating stall was analyzed. Computational results show that a different mechanism does exist for diffusers with large width-radius ratios. Comparison with related conclusions and references is supportive of the model.