| 发动机水下排气噪声预报研究 |
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| 引用本文： | 王晓强,楼京俊,李华,吴海平,朱石坚.发动机水下排气噪声预报研究[J].船舶力学,2011,15(12):1463-1470. |
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| 作者姓名： | 王晓强 楼京俊 李华 吴海平 朱石坚 |
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| 作者单位： | 海军工程大学船舶与动力学院,武汉,430033;海军大连舰艇学院,辽宁大连,116018 |
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| 摘 要： | 由于涉及到两相流,所以发动机水下排气噪声的产生机理和辐射特性非常复杂。文章基于Mixture多相流模型、RNGκ-ε湍流模型和Ffowcs Williams-Hawking声学模型对发动机水下排气噪声进行了数值预报研究,并试验测量了相应工况下发动机水下排气噪声,对数值研究的结果进行了验证。结果表明,文中所提出的发动机水下排气噪声数值预报方法在工程上是可行的。
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| 关 键 词： | 发动机 水下排气 噪声预报 数值模拟 试验 |
Study of the Prediction of the Engine's Underwater Exhaust Noise |
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| WANG Xiao-qiang,LOU Jing-jun,LI Hua,WU Hai-ping,ZHU Shi-jian.Study of the Prediction of the Engine's Underwater Exhaust Noise[J].Journal of Ship Mechanics,2011,15(12):1463-1470. |
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| Authors: | WANG Xiao-qiang LOU Jing-jun LI Hua WU Hai-ping ZHU Shi-jian |
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| Institution: | 1 (1 College of Naval Architecture and Power, Naval University of Engineering, Wuhan 430033, China; 2 Dalian Navy Academy, Dalian 116018, China) |
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| Abstract: | The generation mechanism and radiation characteristics of the engine’s underwater exhaust noise are complicated due to gas water two phase flow. In this paper, the engine’s underwater exhaust noise is predicted numerically based on the Mixture multiphase flow model,the RNG κ-ε turbulence model and the Ffowcs Williams-Hawkings acoustic model. Meanwhile, the engine’s underwater exhaust noise is measured based on the designed test rig. Comparison between the predicted underwater exhaust noise and the measured one shows that the proposed numerical method for the prediction of the engine’s underwater exhaust noise is feasible in engineering. |
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| Keywords: | engine underwater exhaust noise prediction numerical simulation experiment |
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