导管螺旋桨瞬时尾部涡演化数值研究  

Numerical study of transient wake vortex evolution of ducted propeller

作　　者：葛泽昊 王彧 刘政沅 刘辉[1] 周波[1] GE Zehao;WANG Yu;LIU Zhengyuan;LIU Hui;ZHOU Bo(State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,China;COSCO Shipping Heavy Industry(Dalian)Co.,Ltd.,Dalian 116113,China)

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室,辽宁大连116024 [2]大连中远海运重工有限公司,辽宁大连116113

出　　处：《大连理工大学学报》2024年第4期403-411,共9页Journal of Dalian University of Technology

基　　金：国家自然科学基金资助项目(52071059)。

摘　　要：导管螺旋桨是目前船舶的主要推进装置之一.导管可以减弱梢涡作用,提供部分推力.基于分离涡模拟方法,对导管螺旋桨的瞬时尾部流场及功率谱密度进行了计算,对比分析了导管螺旋桨瞬时尾部流场涡量、压强、动能的演化情况.计算结果表明,加速型导管增强了螺旋桨周围的周向流动,从而有助于回收涡流动能,提高推进效率;导管可以延迟梢涡收缩,减小收缩的程度,起到抑制梢涡的作用;尾部流场动能谱分析定量描述了尾部涡结构的演变,观察到尾部涡结构的分组与配对现象;导管螺旋桨在特征频率附近的动能谱振幅明显减小、衰减加快.The ducted propeller is one of the main propulsion devices for ships today.The duct can reduce the tip vortex effect and provide part of the thrust.The transient wake field and the power spectral density of the ducted propeller are calculated,the evolution of vortex volume,pressure and kinetic energy in the transient wake field of the ducted propeller is compared and analyzed by the detached eddy simulation method.The calculation results show that the accelerated duct enhances the circumferential flow around the propeller,which helps to recover the kinetic energy of the vortex and improve the propulsion efficiency.The duct can delay the tip vortex contraction,reduce the degree of contraction,and play a role in suppressing the tip vortex.The kinetic energy spectrum analysis of the wake field quantitatively describes the evolution of the wake vortex structure,and the grouping and pairing phenomena of the wake vortex structure are observed.The amplitude of the kinetic energy spectrum of the ducted propeller near the characteristic frequency is significantly reduced and the decay is accelerated.

关 键 词：导管螺旋桨 分离涡模拟 尾部涡演变 

分 类 号：U664.33[交通运输工程—船舶及航道工程]