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首页> 外文期刊>Ocean Engineering >Turning ability analysis of a fully appended twin screw vessel by CFD. Part II: Single vs. twin rudder configuration
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Turning ability analysis of a fully appended twin screw vessel by CFD. Part II: Single vs. twin rudder configuration

机译：通过CFD分析完全附接的双螺杆容器的旋转能力。第二部分：单舵与双舵配置

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In the present paper, the analysis of the turning capability of the naval supply vessel presented in Part I (Broglia et al., 2015) is continued with different stem appendages, namely twin rudder and centreline skeg. The main purpose of the analysis is to assess the capability of an in-house CFD tool in capturing the different manoeuvring characteristics of the ship hulls; the test case is challenging, as the difference between the two configurations lies in the complex flow structure related to rudder-propeller interactions. Moreover, although the twin rudder solution slightly improves the poor course keeping ability of the original vessel, the course stability remains poor and, consequently, large lateral motions and drift angle have to be expected during the manoeuvre. The manoeuvring capabilities of the new configuration are discussed and compared with the single rudder configuration, focusing on the nature of the hydrodynamic forces and moments acting on the main hull and appendages during the transient and stabilized phases of the manoeuvre. Emphasis will be also given to the different contributions of the propulsion system in the twin rudder configuration, that results from the different rudder-propeller interaction. (C) 2016 Elsevier Ltd. All rights reserved.
机译：在本文中，第一部分（Broglia等人，2015）中介绍的海军补给船的转向能力的分析继续使用不同的茎附件，即双舵和中线line鱼。分析的主要目的是评估内部CFD工具捕捉船体不同操纵特性的能力；该测试用例具有挑战性，因为两种配置之间的差异在于与舵/螺旋桨相互作用相关的复杂流动结构。而且，尽管双舵解决方案稍微改善了原始船的较差的航向保持能力，但是航向稳定性仍然很差，因此，在操纵过程中必须期待较大的横向运动和漂移角。对新配置的操纵能力进行了讨论，并将其与单舵配置进行了比较，重点是在操纵的过渡阶段和稳定阶段作用在主船体和附件上的流体动力和力矩的性质。还将强调双舵配置中推进系统的不同贡献，这是由于舵与桨之间的相互作用不同而引起的。 （C）2016 Elsevier Ltd.保留所有权利。

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