理论和数值方法预报的船舶姿态改变对螺旋桨非定常轴承力的影响

姚慧岚; 张怀新

doi:10.16411/j.cnki.issn1006-7736.2018.03.001

大连海事大学学报 >

2018 , Vol. 44 >Issue 3: 1 - 8

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2018.03.001

理论和数值方法预报的船舶姿态改变对螺旋桨非定常轴承力的影响

姚慧岚 ,
张怀新

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（上海交通大学海洋工程国家重点实验室/高性能船舶与深海开发协同创新中心，上海 200240）

姚慧岚(1988 - )，男，博士生，研究方向:船舶水动力学.

收稿日期: 2018-01-19

修回日期: 2018-02-26

网络出版日期: 2024-06-27

基金资助

国家自然科学基金资助项目（51479116;11272216）.

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Influence of ship attitude change predicted by theoretical and numerical methods on propeller's unsteady bearing force

YAO Hui-lan ,
ZHANG Huai-xin

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( State Key Laboratory of Ocean Engineering/Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration (CISSE),Shanghai Jiao Tong University,Shanghai 200240, China)

Received date: 2018-01-19

Revised date: 2018-02-26

Online published: 2024-06-27

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摘要

对船舶两种不同姿态下的螺旋桨非定常轴承力进行预报，并对其谐调分量进行研究.在此基础上，研究船舶姿态改变对螺旋桨非定常轴承力的影响.结果表明：船舶姿态改变（纵倾和吃水增加）时，桨盘面伴流分布的低阶分量的幅值均相应增加，从而使螺旋桨三向轴承力的谐调分量的幅值均有不同程度的增加，其中，横向力幅值的增加明显.此外，研究证明：拟定常方法可以较准确地预报船舶不同姿态下螺旋桨的非定常激振力以及姿态改变造成的螺旋桨激振力的变化；将船和桨分开模拟的方法也可以准确地预报船舶不同姿态下螺旋桨的非定常激振力.

关键词： 船舶姿态; 螺旋桨; 轴承力; 船舶伴流; 谐调分量; 计算流体力学

本文引用格式

姚慧岚 , 张怀新 . 理论和数值方法预报的船舶姿态改变对螺旋桨非定常轴承力的影响[J]. 大连海事大学学报, 2018 , 44(3) : 1 -8 . DOI: 10.16411/j.cnki.issn1006-7736.2018.03.001

Abstract

The unsteady bearing force of propeller under two different positions was predicted and its harmonic component was studied. Based on this, the influence of ship attitude change on unsteady propeller bearing forces was studied. Results show that when the ship attitude changes (trim and draft increase), the amplitudes of low harmonics of the wake at the propeller plane increase, which makes the amplitudes of threedimension bearing forces increase to some extent. Among them, the transvers force increase obviously. In addition, the results prove that the quasisteady method is capable of predicting unsteady propeller bearing force of the ship with different attitude and also the amplitude change of propeller bearing force caused by ship attitude change. The method of simulating the ship and the propeller separately can also accurately predict propeller bearing forces of the ship with different attitudes.

Key words： ship attitude; propeller; bearing forces; ship wake; harmonic componet; computational fluid dynamics

参考文献

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