RANS Simulation of Podded Propulsor Performances in Straight Forward Motion--《Ch

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2sw*K K-mNB0RANS Simulation of Podded Propulsor Performances in Straight Forward Motion

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郭春雨 杨晨俊 马宁水利论文DB K-Q@']

W^!B-I[1W,A0【摘要】:The Computational Fluid Dynamics(CFD)approach is adopted to study the steady and unsteady performances of the podded propulsor by the Fluent software package.While the interactions of the propeller blades with the pod and strut are time-dependent by nature,the mixing plane model is employed firstly to predict the steady performance,where the interactions are time-averaged.Numerical experiments are carried out with systematically varied mesh sizes to investigate the dependence of the predicted force values on the mesh sizes.Furthermore,the sliding mesh model is employed to simulate the unsteady interactions between the blades,pod and strut.Based on the numerical results,the characteristics of unsteady hydrodynamic forces are discussed,and the applicability of the mixing plane model is investigated for puller-type podded propulsor.水利论文B-e `'O8s wI,~0`

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6P&Q;S Iyo\I-HOk0【关键词】:水利论文0Ft"t+fx

-c#iZ7E C8]T&K/e~0podded propulsor;propeller;steady;unsteady

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【基金】:supported by the“Knowledge-based Ship Design Hyper-Integrated Platform(KSHIP)”水利论文+DG)TsmD)v/c;K

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t o7\N az"\01.IntroductionSince its first applicationin1990,the podded propulsor hasfound a broadrange of applicationontankers,ice breakers,and cruise liners,etc.This novel propulsion device is advantageous over con-ventional propellers in many ways.For example,the水利论文u EkVQ8rao

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