Numerical Study of Cavitation Noise Around NACA66 (MOD) Hydrofoil with Direct Volume Integration

IF 0.9 4区工程技术 Q4 ENGINEERING, CIVIL

International Journal of Offshore and Polar Engineering Pub Date : 2023-09-01 DOI:10.17736/ijope.2023.sv01

Lianjie Yu, Fuchang Zhou, Weiwen Zhao, Decheng Wan

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引用次数: 0

Abstract

Underwater noise (URN) is the focus of academic research, and cavitation is an important source of underwater noise. This paper takes NACA66 (mod) two-dimensional hydrofoil as the research object and uses the open-source software OpenFOAM to simulate the sheet cavitation and sound ﬁeld. The turbulence model is DDES, and the cavitation model is the Schnerr-Sauer model. The sound ﬁeld is predicted by the FW-H formulation. Unlike the traditional method, this paper solves the quadrupole term (nonlinear term) by direct volume integration, so the nonlinear term can be predicted more accurately. At the same time, a new method of changing sound wave velocity is proposed considering the two-phase medium problem caused by cavitation. Four methods are compared, including two-phase volume integration, direct volume fraction, object surface integration, and penetrable formulation. It is found that the inﬂuence of two-phase ﬂow is greater near the closure area of the cavity, which needs to be considered separately. The linear sound shows dipole directivity and the nonlinear component exhibits quadrupole characteristics.

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基于直接体积积分的NACA66 (MOD)水翼空化噪声数值研究

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来源期刊

International Journal of Offshore and Polar Engineering ENGINEERING, CIVIL-ENGINEERING, OCEAN

CiteScore

2.00

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The primary aim of the IJOPE is to serve engineers and researchers worldwide by disseminating technical information of permanent interest in the fields of offshore, ocean, polar energy/resources and materials engineering. The IJOPE is the principal periodical of The International Society of Offshore and Polar Engineers (ISOPE), which is very active in the dissemination of technical information and organization of symposia and conferences in these fields throughout the world. Theoretical, experimental and engineering research papers are welcome. Brief reports of research results or outstanding engineering achievements of likely interest to readers will be published in the Technical Notes format.