Influence of air supply on the performance and internal flow characteristics of a cross flow turbine

Zhenmu Chen and Young-Do Choi

Renewable Energy, 2015, vol. 79, issue C, 103-110

Abstract: This study attempts to improve the efficiency of a given type of cross flow turbine by supplying air from air suction holes. A newly developed air supply method is adopted. CFD analysis of the cross flow turbine is carried out to investigate the performance and internal flow characteristics of the turbine in detail. The air layer prevents shock loss between water flow and axis and suppresses recirculation flow in the runner passage. Hence, it is necessary to measure the amount of air layer in the runner passage and examine its effect on the performance of the cross flow turbine. The result shows that the turbine efficiency has improved more as the newly developed air supply method is applied effectively.

Keywords: Cross flow turbine; Performance improvement; Internal flow; Air layer effect (search for similar items in EconPapers)
Date: 2015
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:79:y:2015:i:c:p:103-110

DOI: 10.1016/j.renene.2014.08.024

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