Effect of the geometric size of ice on the hydrodynamic performance of a podded propulsor

被引：0
|
作者：
Xu P. [1 ]
Guo C. [1 ]
Wang C. [1 ]
Li P. [1 ]
机构：
[1] College of Shipbuilding Engineering, Harbin Engineering University, Harbin
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2020年 / 41卷 / 11期
关键词：
Hydrodynamic load; Ice; Ice-propeller interaction; Overset grid; Podded propulsor; RANS; Thrust; Torque;
D O I：
10.11990/jheu.201904046
中图分类号：
学科分类号：
摘要：
In order to study the effect of different-sized ice on the unsteady characteristics of a podded propulsor during navigation of the propulsor in an ice zone, a numerical performance simulation was conducted for different-sized ice and different advance coefficients using the Reynolds-averaged Navier-Stokes (RANS) method and an overset grid approach. In this paper, the unsteady load and flow field of the propeller under interaction with different-sized ice and the podded propulsor are analyzed. The results showed that when the length of ice is greater than the radius of the propeller, as the ice length increases, the propeller thrust and torque remain virtually unchanged. When the length of ice is less than the radius of the propeller, the length of ice and the velocity of inflow together influence the change in propeller thrust and torque. When the width of ice increases within the propeller disk, the propeller thrust and torque increase linearly, the width of ice increases outside the propeller disk, and propeller thrust and torque tend to be stable. The thicker the ice, the greater the impact on the propeller thrust and torque. The results of numerical simulation provide a reference for the selection of ice size parameters in theoretical research, numerical simulation, and experiment-based research of ice interacting with a podded propulsor. The study also indexes the setup of the hydrodynamic performance of the podded propulsor in a coupled study and the design of the podded propulsor in an ice zone. Copyright ©2020 Journal of Harbin Engineering University.
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页码：1642 / 1650
页数：8
相关论文
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