不同轮缘结构无轴泵喷推进器间隙流动特性分析  

Analysis of Clearance Flow Characteristics of Shaftless Pump-Jet Propellers with Different Flange Structures

作　　者：阮华[1] 韩承灶 石碧亮 季斌 洪方文[1] Ruan Hua;Han Chengzao;Shi Biliang;Ji Bin;Hong Fangwen(Key Laboratory on Ship Vibration&Noise,China Ship Science Research Center&Taihu Laboratory of Deepsea Technological Science,Science,Wuxi 214082,China;State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China)

机构地区：[1]中国船舶科学研究中心船舶振动噪声重点实验室、深海技术科学太湖实验室,无锡214082 [2]武汉大学水资源与水电工程科学国家重点实验室,武汉430072

出　　处：《水动力学研究与进展（A辑）》2023年第3期472-481,共10页Chinese Journal of Hydrodynamics

摘　　要：为研究无轴泵喷推进器轮缘间隙结构特征对推进器流动损耗影响,该文采用雷诺时均(RANS)方法对不同间隙结构的推进器内部流场进行计算。首先对基础无轴泵喷推进器构型水动力性能进行预报,通过与试验对比,验证了计算方法的可靠性。采用正交试验设计的方法,对轮缘间隙参数进行调整和修改,分析了不同间隙尺寸组合方案的间隙区域流动特征和损耗情况,并以此选择最佳搭配方案。并基于最佳间隙搭配方案,对间隙轮缘局部结构进行优化研究,以进一步改善流动损耗问题。结果表明,轮缘长度对于流动损耗影响最大,径向间隙次之,随后是轮缘外径、进流间隙以及出流间隙;对轮缘形状以及拐角区域进行优化,兼顾了推进效率和流动损耗,凸型倒角轮缘结构效果最佳。In order to study the influence of the structural characteristics of the rim clearance of the shaftless pump-jet on the flow loss of the thruster,the Reynolds Time Average(RANS)method is used to calculate the flow field around the thruster with different clearance structures.This paper first predicts the hydrodynamic performance of the basic shaftless pump-jet,and validates the reliability of the calculation method through comparison with the test.The orthogonal test method is used to adjust and modify the rim gap,analyze the flow characteristics and loss around the propeller under different gap sizes,and then select the best matching scheme based on this.Based on the optimal gap matching program,the local structure of the gap area is adjusted to further improve the flow loss problem.The results show that the rim length has the greatest influence on the flow loss through the orthogonal test method followed by the radial clearance,and then the rim outer diameter,the inlet clearance and the outlet clearance.The shape of the rim and the corner area are optimized,taking into account the efficiency of the propeller and the flow loss,the convex chamfered rim structure has the best effect.

关 键 词：无轴泵喷 正交试验 间隙流动 局部结构优化 

分 类 号：O359.1[理学—流体力学]