摘要
为了探究阿基米德螺旋水轮机(ASHT)的性能特点,对5种具有不同旋叶倾角的ASHT进行计算流体动力学(CFD)和单向流固耦合数值模拟。研究结果表明:5种ASHT的峰值功率系数均介于低尖速比范围内,其中角度组合为30-45-60的ASHT具有最佳的峰值功率系数;具有大旋叶倾角的ASHT具有更宽泛的尖速比范围和更大的推力系数,其峰值功率系数对应的尖速比也移动到较大的位置;具有大旋叶倾角的ASHT具有更强的流动堵塞效应和较大的波动幅度;在水动力、重力及自身旋转效应的共同作用下,ASHT所受载荷会出现周期性波动。研究成果可供ASHT的优化设计和推广应用参考。
Tidal current energy technology is one of the fastest growing renewable energy technologies.Traditional tidal turbines are usually designed to operate at relatively high current speeds,making it difficult for them to cope with power generation tasks in low-speed marine areas.The archimedes spiral hydrokinetic turbine(ASHT)is a newly proposed,economically viable,and environmentally friendly hydrodynamic power generation device that offers a promising opportunity for utilizing low-speed tidal currents.Aiming to explore the performance characteristics of ASHT,computational fluid dynamics and one-way fluid-structure coupling numerical simulations of five ASHTs with different blade angles are carried out.The results show that the peak power coefficients of five ASHTs are all in the low tip speed ratio range,and the 30-45-60 has the best peak power coefficient among them.The ASHT with a large blade angle has a wider operating tip speed ratio range and a higher thrust coefficient,its tip speed ratio point of peak power coefficient has shifted to a higher position.The ASHT with a large blade angle has stronger flow blockage effect.The loads acting on ASHT will have periodic vibration under the combined action of hydrodynamics,gravity and rotation effect.Moreover,the ASHT with a large blade angle also has a higher load fluctuation.The research results reveal the performance characteristics of ASHT,and provide a reference for the optimal design and promotion application of this type of hydrokinetic turbine.
作者
宋科
康宇驰
魏留闯
刘春霞
SONG Ke;KANG Yuchi;WEI Liuchuang;LIU Chunxia(School of Mechanical and Electrical Engineering,Kunming University,Kunming 650214,China;Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,China;School of Statistic and Mathematics,Yunnan University of Finance and Economics,Kunming 650221,China)
出处
《船舶工程》
CSCD
北大核心
2024年第9期152-159,共8页
Ship Engineering
基金
云南省“兴滇英才支持计划”青年人才专项(XDYC-QNRC-2023-0159)
云南省先进装备智能制造技术重点实验室开放基金资助项目(KLYAEIMTY2022001)
云南省基础研究专项(202201AU070028)。
关键词
潮流能
阿基米德螺旋水轮机
旋叶倾角
数值模拟
tidal current energy
archimedes spiral hydrokinetic turbine(ASHT)
blade angle
numerical simulation
