三维AUV船体不同迎角非定常CFD仿真

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2016-12-29 DOI:10.3329/JNAME.V13I2.25849

S. Ray, D. Chatterjee, S. Nandy

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引用次数: 2

摘要

在基于有限体积的CFD软件的帮助下，对印度杜尔加普尔CSIR-CMERI公司正在开发的自主水下航行器的裸船体进行了不同迎角的非定常三维流动模拟。该研究的目的是提供在不同操作角度作用在裸船体上的各种水动力的估计。考虑到高达2节的上游电流，车辆的运行速度范围为0-6节(0-3米/秒)。为了CFD模拟的目的，使用了广泛实施的RANS方法，其中湍流输运方程是使用低Re版本的SST ?-?湍流模型。车辆的运动被认为是在俯仰角范围内(0<=alpha<=20)。计算结果以相关水动力参数的变化形式给出。详细讨论了迎角对阻力系数和压力系数的影响。

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Unsteady CFD simulation of 3D AUV hull at different angles of attack

An unsteady, three-dimensional flow simulation is carried out over the bare hull of the autonomous underwater vehicle currently being developed by CSIR-CMERI, Durgapur, India at various angles of attack with the help of a Finite Volume-based CFD software. The purpose of the study is to provide estimation of various hydrodynamic forces acting on the bare hull at different angles of operation. The operating range of velocity of the vehicle is 0-6 knot (0-3 m/s), considering up to 2 knots of upstream current. For the purpose of the CFD simulation, the widely-implemented RANS approach is used, wherein the turbulent transport equations are solved using the low- Re version of the SST ?-? turbulence model. The motion of the vehicle is considered within a range of the pitch angle (0<=alpha<=20). The results are presented in terms of variations of the relevant hydrodynamic parameters. The effects of the angle of attack on the drag and pressure coefficients are discussed in detail.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.