【作者】 周彬； 赵敏； 万德成；

【Author】 ZHOU Bin;ZHAO Min;WAN De-cheng;State Key Laboratory of Ocean Engineering,School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration;

【机构】 上海交通大学船舶海洋与建筑工程学院海洋工程国家重点实验室高新船舶与深海开发装备协同创新中心；

【摘要】 导管螺旋桨是一种低航速推力强、效率高的优良特种推进器,普遍应用于水下无人遥控潜水器(ROV)。在桨叶与导管之间的梢隙中存在的流动情况非常复杂,本研究基于大涡模拟(LES)方法对某型导管螺旋桨的梢隙流动进行了数值模拟分析。通过对计算域网格数量和若干监测点压力的收敛性研究,建立基于LES的梢隙流动的数值模型。将水动力计算结果与试验数值进行比较,以确定LES方法在计算导管螺旋桨水动力性能问题上的准确性。并将LES方法模拟的梢隙流动细节与常用的RANS方法计算的梢隙流动细节相对比,结合对梢隙流场的原理分析,比较两种方法模拟在旋涡形态,旋涡强度,旋涡发展、脱落、耗散过程等的差异,探讨更适合梢隙流动模拟的数值模拟方法。更多还原

【Abstract】 Ducted propeller is a kind of special propeller with strong thrust and high efficiency at low speed,which is widely used in Remote Operated Vehicle(ROV).The flow between the blade and the duct is very complex,and in this study large eddy simulation(LES) is used to study the tip leakage flow(TLV).A numerical model based on LES is established by studying the convergence of grid number and pressure at several monitoring points.The hydrodynamic results are compared with the experimental data to determine the accuracy of LES method in calculating the hydrodynamic performance of the ducted propeller.Details of TLV calculated by LES method are compared with that calculated by RANS method.Combined with analysis of the principle of the tip leakage flow field,the differences of the intensity of vortex and vortex development,fall off and the dissipation process are compared to explore more suitable method for tip leakage flow simulation.更多还原