直叶H型潮流水轮机三维数值模拟  

Three-dimensional numerical simulation of H-type straight-blade tidal turbine

作　　者：付士凤 郑源[1] 梁晓玲[2] 阚阚 陈会向[1] 杨春霞[1] 

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]河海大学文天学院,安徽马鞍山243031

出　　处：《水利水电科技进展》2017年第2期33-36,62,共5页Advances in Science and Technology of Water Resources

基　　金：国家自然科学基金(51339005;51579080);安徽省自然科学基金(1608085ME119)

摘　　要：为了探究直叶H型潮流水轮机水动力性能的影响因素,在理论分析的基础上,应用大型建模软件UG建立了直叶H型潮流水轮机三维模型,基于滑移网格技术采用Fluent软件对水轮机模型进行三维数值模拟,在保持直叶H型潮流水轮机叶片翼型一定、水轮机密实度相同的条件下,通过改变转轮叶片数以及来流速度,分析了潮流水轮机水动力性能。结果表明,叶片数对直叶H型潮流水轮机水动力性能影响很大,叶片数越多,输出扭矩值越小,当叶片数为3、叶尖速比为1.63时,水轮机最高获能系数为31.21%。In order to explore the factors influencing the hydrodynamic performance of an H-type straight-blade tidal turbine,based on theoretical analysis,a three-dimensional model of an H-type straight-blade tidal turbine was established using large-scale modeling software UG,and three-dimensional numerical simulations were carried out using the Fluent software and the sliding mesh method. Under the conditions with the same airfoil type of H-type turbine blade and the same turbine solidity,the hydrodynamic performance of the tidal turbine was analyzed by changing the number of runner blades and inflow velocity. The results show that the number of blades has a significant effect on the hydrodynamic performance of the H-type straight-blade tidal turbine. The greater the number of blades, the smaller the output torque is. When the number of blades is three and the tip speed ratio is 1. 63,the highest turbine power coefficient is 31. 21%.

关 键 词：潮流水轮机 直叶 翼型 水动力性能 数值模拟 

分 类 号：TK730.1[交通运输工程—轮机工程]