三维水翼梢涡流场数值研究  

Numerical study of hydrofoil tip vortex fluid field

作　　者：蒲汲君 熊鹰[1] 

机构地区：[1]海军工程大学舰船工程系,湖北武汉430033

出　　处：《中国舰船研究》2017年第1期8-13,26,共7页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(51179198)

摘　　要：针对三维水翼梢涡流场和梢涡空泡初生的问题,分别建立k-ω,DES和LES模型,对水翼的梢涡流场进行计算研究。为减少误差,在网格的处理上对梢涡流域进行局部加密,对未发生空化时梢涡内的轴向速度和切向速度进行计算,发现LES模型的计算结果与实验值吻合较好。在此基础上,讨论尾涡的卷曲对梢涡压力场的影响,提出了使用气泡静力平衡方程计算初始梢涡空泡数的方法。Three different models, κ-ω, DES and LES, are conducted in the analysis of the tip vortex flow field. In order to reduce the discrete error induced by the grid, mesh refinement is applied to the area of the tip vortex core in numerical simulations. The axis and tangential velocities of the tip vortex flow field with no cavitation are calculated, and the calculated velocities agree well with the experimental results. On the basis of this process, the influence of vortex roll-up on the tip vortex pressure filed is discussed, and bubble static equilibrium is proposed by which the tip vortex cavitation inception number is computed.

关 键 词：梢涡 气泡静力平衡方程 空泡初生 水翼 

分 类 号：U661.313[交通运输工程—船舶及航道工程]