文献类型：期刊文献

英文题名：Hydrodynamic performance of a mono-tangent backward-rotating impeller based on tidal current energy utilization

作者：Wu, Zhen-hai[1];Xu, Qing[1];Ling, Chang -ming[1];Wu, Chang-qin[1]

机构：[1]Guangdong Ocean Univ, Sch Mech & Power Engn, Zhanjiang 524000, Peoples R China

年份：2022

卷号：258

外文期刊名：OCEAN ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000826700800002)、、EI(收录号：20222712328626)、Scopus(收录号：2-s2.0-85133493816)、WOS

基金：Funding This research was funded by the Guangdong Provincial Science and Technology Plan Project (Grant Nos. 2017A050506054 and 2017A010104011) and the Zhanjiang City Science and Technology Plan Project (Grant No. 2018A02013) .

语种：英文

外文关键词：Cross-interface; Mono-tangent; Backward-rotatingimpeller; CFD; Coefficientofpower

外文摘要：Owing to the continuous consumption of fossil fuel and increasing environmental problems, there is an urgent need to develop technologies for the efficient use of clean energy. In this study, a mono-tangent backward-rotating impeller based on tidal current energy utilization is proposed, and its hydrodynamic performance was studied using the computational fluid dynamics method by establishing a hydrodynamic model of the backward-rotating impeller. The influences of the number of blades, impeller aspect ratio (lambda), and different flow speeds on the coefficient of power (c(p)) of the mono-tangent impeller were investigated. The results show that the value of c(p) of the mono-tangent impeller with four blades is higher than that of the impellers with two, three, five, and six blades. lambda has a significant impact on the backward-rotating impeller, with c(p) of the impeller reaching an optimal value when lambda = 0.5 and the flow speed is 1.25(-1).5 m/s (with a tip speed ratio of 0.6-0.75).