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NUMERICAL SIMULATION OF A podded propulsor IN VISCOUS FLOW

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Journal of Hydrodynamics 2009年第1期21卷 71-76页

作者： GUO Chun-yu MA Ning YANG Chen-jun State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University Shanghai 200030 China

A podded propulsor in viscous flow is numerically simulated in this article. The region of fluid is divided into efficient calculation grids. The pressure and viscous force of blades, pod and strut are obtained as functions of an advance coefficient. The steady result is used as a base in the unsteady simulation to obtain a solution more quickly. The distributions of the thrust and torque fluctuations of the key blade in one revolution are obtained. The c^lculation results from the mixing plane on steady conditions are compared with those obtained from the sliding mesh model on unsteady conditions. The User-Defined Function （UDF） method is used to simulate the influence of ship hull on the non-uniform wake of the propeller.

关键词： podded propulsor propeller steady unsteady RANS

RANS Simulation of podded propulsor Performances in Straight Forward Motion

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China Ocean Engineering 2008年第4期22卷 663-674页

作者：郭春雨杨晨俊马宁 State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University School of Shipbuilding Engineering Harbin Engineering University

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.

关键词： podded propulsor propeller steady unsteady

Research of podded propulsors with Varied Geometry in Viscous Flow

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China Ocean Engineering 2010年第4期24卷 693-708页

作者：郭春雨胡文婷杨晨俊马宁 College of Shipbuilding Engineering Harbin Engineering University State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University

Based on the model test of podded propulsor in straight forward motion, the paper presents the results of the effects of geometric parameters on the propulsive characteristics of podded propulsors in viscous flow. Three main geometrical parameters, i.e. pod diameter, strut distance from the propeller plane, and the maximum thickness of strut are studied with systematically varied geometry while the parameters of propeller blades are fixed. The RANS approach is adopted to study the steady perfomaance using the Huent 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 to predict the steady perfomlance. In considera- tion of the complexity, the research does not deal with the effects of the combination of such three main parameters.

关键词： podded propulsor propeller varied geometry RANS

Simulation of Hydrodynamic Performance of Drag and Double Reverse Propeller podded propulsors

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Journal of Marine Science and Application 2016年第1期15卷 16-27页

作者： Chunyu Guo Pengfei Dou Tao Jing Dagang Zhao School of Shipbuilding Engineering Harbin Engineering University Harbin 150001 China

The unsteady performance of drag and double reverse propeller podded propulsors in open water was numerically simulated using a computational fluid dynamics （CFD） method. A moving mesh method was used to more realistically simulate propulsor working conditions, and the thrust, torque, and lateral force coefficients of both propulsors were compared and analyzed. Forces acting on different parts of the propulsors along with the flow field distribution of steady and unsteady results at different advance coefficients were compared. Moreover, the change of the lateral force and the difference between the abovementioned two methods were mainly analyzed. It was shown that the thrust and torque results of both methods were similar, with the lateral force results having the highest deviation

关键词： podded propulsor propeller lateral force computational fluid dynamics (CFD) hydrodynamic performance moving mesh method