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题名:
A time-efficient CFD approach for hydrodynamic coefficient determination and model simplification of submarine
作者: Gao T(高婷); Wang YX(王亚兴); Pang YJ(庞永杰); Chen, Qinglong; Tang YG(唐元贵)
作者部门: 水下机器人研究室
通讯作者: 王亚兴
关键词: Computational fluid dynamics ; Hydrodynamic coefficients ; Maneuverability ; Underwater vehicles
刊名: Ocean Engineering
ISSN号: 0029-8018
出版日期: 2018
卷号: 154, 页码:16-26
收录类别: EI
EI收录号: 20181304955326
产权排序: 2
项目资助者: National Key Research and Development Program of China [grant number 2016YFC0300802], and the National High Technology Research and Development Program of China (863 Program) [grant number 2011AA09A106].
摘要: Maneuverability is one of the most important performance characteristics of submarines. Hydrodynamic model is increasingly relied on as a design approach to determine the inherent motion behavior of a proposed submarine before construction. Standard submarine motion equations are the most used hydrodynamic model, in which more than 100 coefficients need to be estimated. These coefficients have to be determined by captive model tests, semi-empirical method and potential flow method on the basis of existing approach. The separately determining approach makes it difficult to assess model reliability. This paper proposes a time-efficient approach for the estimation of hydrodynamic coefficients using computational fluid dynamics (CFD) method. Instead of a repetitive and time-consuming process, the proposed spatial captive motion could provide all necessary information for determination of all required coefficients in only one simulation. Linear regression, based on the least square method, is employed to determine coefficients in hydrodynamic model. Statistical investigation, correlation and significance analysis, indicates that the standard submarine motion equations can be further simplified when submarine moving forward with small perturbations along other directions. The final simplified motion equations have much fewer components than the original model while fitting accuracy remained. Validation results prove that spatial captive motion simulation and the simplification approach employed in this paper are effective and reliable. It should have a large scope in further maneuverability research.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.sia.cn/handle/173321/21734
Appears in Collections:水下机器人研究室_期刊论文

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作者单位: 1.State Key Laboratory of Science and Technology on Autonomous Underwater Vehicle, Harbin Engineering University, Harbin 150001, China
2.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China

Recommended Citation:
Gao T,Wang YX,Pang YJ,et al. A time-efficient CFD approach for hydrodynamic coefficient determination and model simplification of submarine[J]. Ocean Engineering,2018,154:16-26.
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