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http://dx.doi.org/10.5293/KFMA.2011.14.4.057

Characteristics of Leakage Flow on Regenerative Blower and Leakage-reducing Design for Performance Enhancement  

Choi, Min-Ho (서울대학교 대학원 기계항공공학부)
Kim, Young-Hoon (서울대학교 대학원 기계항공공학부)
Kang, Shin-Hyoung (서울대학교 기계항공공학부)
Publication Information
The KSFM Journal of Fluid Machinery / v.14, no.4, 2011 , pp. 57-63 More about this Journal
Abstract
Regenerative blower is suitable for hydrogen recirculation in fuel cell vehicle due to its capability of high pressure rise in single stage. Numerical models were applied to investigate inner gap leakage flow characteristics. A leakage flow in the inner gap is dominantly affected by pressure gradient. Therefore a blower with concentric channel type was suggested as one of modified models for reducing the inner gap pressure gradient. Also numerical results such as pressure rise, efficiency, leakage flow rate and torque were compared between modified and reference models. The performance of concentric channel type was improved as a result of reduced leakage flow.
Keywords
Regenerative blower; Leakage flow; Gap;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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