导管桨近水平壁面流场特性DDES模拟  

Delayed Detached Eddy Simulation of Flow Field Characteristics of Ducted Propeller Near Horizontal Wall

作　　者：张嶔[1] 郭子康 刘永辉 赵昌宇 许情 Zhang Qin;Guo Zikang;Liu Yonghui;Zhao Changyu;Xu Qing(College of Engineering, Ocean University of China, Qingdao 266100, China;Training Center of Ocean University of China, Qingdao 266100, China)

机构地区：[1]中国海洋大学工程学院,山东青岛266100 [2]中国海洋大学实训中心,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2022年第6期134-141,共8页Periodical of Ocean University of China

基　　金：国家自然科学基金项目(51979260)资助。

摘　　要：为研究导管桨受水平壁面影响的流场特性,并为处理港池或航道内的局部冲刷提供理论上的参考,本文采用延迟分离涡模拟(Delayed detached eddy simulation,DDES)和滑移网格AMI(Arbitrary mesh interface)相结合的方法对在水平壁面影响下系泊和进速系数J=0.4的水平导管桨和7°倾斜导管桨进行了数值模拟。通过模拟分析发现,水平壁面对导管桨尾流有吸附作用,且对于系泊状态下的水平导管桨影响更为明显。相较于水平导管桨,倾斜导管桨受壁面影响作用出现在尾流较后阶段。对于有进速的倾斜导管桨,其尾流受斜流的影响大于受水平壁面的影响。In order to study the flow field characteristics of ducted propeller under the influence of horizontal wall and provide theoretical reference for the treatment of local scour in harbor basin or channel,DDES(Delayed detached eddy simulation)and AMI(Sliding mesh)are used in this paper.The horizontal ducted propeller and 7°inclined ducted propeller under the influence of horizontal wall are simulated by the method of interface.Through the simulation analysis,it is found that the horizontal wall has adsorption effect on the wake of ducted propeller,and the effect on the horizontal ducted propeller is more obvious in the mooring state.Compared with the horizontal ducted propeller,the effect of the wall on the inclined ducted propeller appears in the later stage of the wake.For the inclined ducted propeller with advancing speed,the influence of oblique flow on its wake is greater than that of horizontal wall.

关 键 词：导管桨 涡 延迟分离涡模拟 近壁面流场 尾流特性 

分 类 号：U664.33[交通运输工程—船舶及航道工程]