在斜向非定常流动中由层流向湍流转变对模型尺度螺旋桨性能和压力脉动的影响  

Influence of Laminar-to-Turbulent Transition on the Model Scale Propeller Performance and Induced Pressure Pulses in an Unsteady Case of Oblique Flow

作　　者：Stefano Gaggero 

机构地区：[1]University of Genoa,Department of Electric,Electronic,Telecommunications Engineering and Naval Architecture,Via Montallegro 1,Genoa 16145,Italy

出　　处：《哈尔滨工程大学学报（英文版）》2023年第2期199-218,共20页Journal of Marine Science and Application

摘　　要：In this paper,after the successful applications to open water propeller performance estimations,the influence of transition sensitive and modified mass transfer models tuned to account for the laminar flow in the prediction of the cavitation inception of marine propulsors is investigated from the point of view of the unsteady functioning and induced pressure pulses.The VP1304(also known as PPTC)test case,for which dedicated data were collected during several workshops,is considered first.After preliminary analyses using RANS,also Detached Eddy Simulations(DES)are included to better account for the vortex dynamics and its influence on pressure pulses.Similarly to what observed in uniform inflow,results show a better agreement with the available measurements of propeller performances and confirm the reliability of the proposed approaches for unsteady,non-cavitating,model scale propeller predictions.The overall cavitation pattern is improved too by the application of the transition sensitive correction to the mass transfer model,but the complex dynamics of bubble cavitation observed in experiments prevents quantitatively better predictions in terms of thrust/torque breakdown and induced pressure pulses levels regardless the use of RANS or DES methods.

关 键 词：Transition sensitive turbulence models CAVITATION Cavitation with laminar flow Mass transfer models Model scale propeller Oblique flow Induced pressure pulses RANS DES 

分 类 号：U664.33[交通运输工程—船舶及航道工程] U661[交通运输工程—船舶与海洋工程]