斜流中螺旋桨水动力及梢涡流场数值模拟  

Numerical simulation of propeller hydrodynamic and tip vortex field in oblique flow

作　　者：王雅楠 代潞 匡恒 Wang Yanan;Dai Lu;Kuang Heng(Wuhan Institute of Marine Electric Propulsion,Hongshan District,Wuhan 430070,China)

机构地区：[1]武汉船用电力推进装置研究所,武汉430070

出　　处：《船电技术》2023年第5期62-66,共5页Marine Electric & Electronic Engineering

摘　　要：斜流是一种相对简单的非均匀来流,其加剧了船尾伴流场的非均匀性,改变了桨叶表面的压力布局。对螺旋桨非定常力非常不利,为了探讨斜流中螺旋桨水动力性能与梢涡流场变化的一般规律。本文以E779A螺旋桨为研究对象,通过在梢涡区域进行网格加密,对梢涡进行了数值模拟。本文考察并分析了斜流下螺旋桨叶片推力各个分量随着螺旋桨运动周期性变化,螺旋桨尾流中的梢涡形态变化。研究发现斜流会对螺旋桨产生的推力造成影响,这一影响会随着来流与螺旋桨轴线夹角的变化而增强,进一步对比分析可以发现斜流的存在会在一定程度上加快螺旋桨梢涡的耗散。Oblique flow is a relatively simple and heterogeneous incoming flow,which intensifies the inhomogeneity of the stern wake field and changes the pressure layout the blade surface.In order to the general law of the hydrodynamic performance of the propeller and the change of the tip vortex field in the oblique flow.In this paper,the E779A propeller is studied to proceed numerical simulation for tip vortes.This paper examines and analyzes the periodic changes of thrust components along with propeller motion and the tip vortex shape change in the propeller weak flow.It is found that the oblique flow will affect the thrust and torque produced by the propeller,which will increase with the change of the Angle between the current and t the propeller axis.Further comparative analysis can find that the oblique flow will accelerate the dissipation of the propeller tip vortex to a certain extent.

关 键 词：螺旋桨 斜流 水动力 梢涡 

分 类 号：U661[交通运输工程—船舶及航道工程]