Effect of Blade Profile on the Performance of Wells Turbine under Unidirectional Sinusoidal andReal Sea FlowConditions

[摘要] This paper presents the effect of blade profile and rotor solidity on the performance of Wells turbine operatingunder unidirectional unsteady flow conditions. In the study, four kinds of blade profile were selected, that is,NACA0020, NACA0015, CA9, and HSIM 15-262123-1576. The experiments have been carried out for twosolidities,σ= 0.48 andσ= 0.64, under sinusoidal and irregular unsteady flow conditions based on Irish waves(site2). As a result, it was found that the preferable rotor geometry is the one with blade profile of CA9 withsolidityσ= 0.64. In addition, the effect of blade profile and rotor solidity on hysteretic characteristics of the turbinehas been clarified experimentally and it was found to be in good agreement qualitatively when compared to numericalresults (Setoguchi et al. (2003)).

[学科分类] 力学，机械学