Stereo Particle Image Velocimetry Measurement of the Flow around SUBOFF Submarine under Yaw Conditions

IF 2.7 3区地球科学 Q1 ENGINEERING, MARINE

Journal of Marine Science and Engineering Pub Date : 2024-09-06 DOI:10.3390/jmse12091576

Mo Chen, Nan Zhang, Ziyan Li, Junliang Liu, Lan Yu, Wentao Zheng, Xuan Zhang

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引用次数: 0

Abstract

To gain a better understanding of the complex flow dynamics and stealth characteristics of submarines under maneuvering conditions, flow field experiments were conducted on the SUBOFF submarine model in the large low-speed wind tunnel at the China Ship Scientific Research Center (CSSRC). The three-dimensional velocity field above the hull at 6° and 9° yaw angles was captured using the stereo particle image velocimetry (SPIV) system. The experimental Reynolds numbers were selected as ReL = 0.46 × 107 and ReL = 1.08 × 107. The wake of the sail and the junction between the sail root and the hull were analyzed in detail, focusing on the core flow of the sail-tip vortex. The results revealed that at a larger yaw angle, the vorticity magnitude and turbulent kinetic energy (TKE) of the wake increased, and the downwash effect of the sail-tip vortex center became more pronounced. Furthermore, a higher Reynolds number resulted in an even more significant downwash of the vortex center, accompanied by a slight deviation towards the suction side. These experimental findings can contribute to the enrichment of the benchmark database for validating and improving numerical simulations of submarine wakes.

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在偏航条件下对 SUBOFF 潜艇周围水流的立体粒子图像测速仪测量

为了更好地了解潜艇在机动条件下的复杂流动动力学和隐身特性，在中国船舶重工集团公司（CSSRC）的大型低速风洞中对 SUBOFF 潜艇模型进行了流场实验。使用立体粒子图像测速仪（SPIV）系统捕捉了 6° 和 9° 偏航角下艇体上方的三维速度场。实验雷诺数分别为 ReL = 0.46 × 107 和 ReL = 1.08 × 107。详细分析了风帆的尾流以及风帆根部与船体之间的交界处，重点分析了风帆顶端漩涡的核心流。结果表明，偏航角越大，尾流的涡度大小和湍流动能（TKE）越大，帆尖涡流中心的下冲效应越明显。此外，雷诺数越高，涡流中心的下冲效应越明显，同时还略微偏向吸力侧。这些实验结果有助于丰富基准数据库，以验证和改进对潜艇漩涡的数值模拟。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Marine Science and Engineering Engineering-Ocean Engineering

CiteScore

4.40

自引率

20.70%

发文量

1640

审稿时长

18.09 days

期刊介绍： Journal of Marine Science and Engineering (JMSE; ISSN 2077-1312) is an international, peer-reviewed open access journal which provides an advanced forum for studies related to marine science and engineering. It publishes reviews, research papers and communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files and software regarding the full details of the calculation or experimental procedure, if unable to be published in a normal way, can be deposited as supplementary electronic material.