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论文:2020,Vol:38,Issue(3):478-484 |
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引用本文： |
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许海雨, 罗凯, 黄闯, 左振浩. 通气超空化流域径向尺度影响[J]. 西北工业大学学报 |
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XU Haiyu, LUO Kai, HUANG Chuang, ZUO Zhenhao. Influence of Flow Field's Radial Dimension on Ventilated Supercavitating Flow[J]. Northwestern polytechnical university |
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| 通气超空化流域径向尺度影响 |
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| 许海雨, 罗凯, 黄闯, 左振浩 |
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| 西北工业大学 航海学院, 陕西 西安 710072 |
| 摘要: |
| 为研究流域尺度对阵泄气通气超空化的影响，基于分相流模型和SST湍流模型，考虑通气可压缩性，建立了通气超空泡流动的三维数值模型，通过水洞实验对数值方法进行了验证，研究了流域径向尺度对通气超空泡尺度和压力分布特性的影响。计算结果表明：流域径向尺度对通气超空泡流型及压力分布影响显著。流域径向尺度比小于6.5时，无法形成完全包裹航行器的超空泡，随着流域径向尺度增加，超空泡尺寸增大，空泡内压力和外流场压力均减小；当径向尺度比大于54.0时，空泡尺寸和内部压力达到稳定收敛，计算结果与经验公式吻合，研究结果为模拟阵泄气通气超空泡自由流场空泡形态提供了流域径向尺度的选择标准，可用于指导工程实践。 |
| 关键词:
通气空化泡
流场
空泡尺寸
压力分布
多相流
SST湍流模型
水下航行器
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| Influence of Flow Field's Radial Dimension on Ventilated Supercavitating Flow |
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| XU Haiyu, LUO Kai, HUANG Chuang, ZUO Zhenhao |
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| School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China |
| Abstract: |
| To investigate the influence of flow field's radial dimension on the flow of the portion gas-leakage supercavity, based on the two-fluid multiphase flow model and SST turbulence model, considering the compressibility of ventilated gas, a 3D simulation model of ventilated supercavity was established to simulate the flow of the supercavitation, which was consistent with water tunnel experiment. The effect of flow field's radial dimension on ventilated supercavity's dimension and pressure distribution was studied. The results show that flow field's radial dimension has a significant effect on the ventilated supercavity's dimension and pressure distribution. When flow field's radial dimension ratio is 6.5 times lower than the maximum diameter of supercavity, the supercavity cannot be formed to completely enclose the underwater vehicle. With the increase of flow field's radial dimension,the pressure inside and outside the supercavity decreases, and there is a pronounced increase in supercavity dimension. When flow field's radial dimension ratio is 54.0 times greater than the maximum diameter of supercavity, the dimension and pressure distribution of ventilated supercavity remain unchanged, which coincides with the theoretical results. In addition, the calculation results provide a criterion for simulating the shape of ventilated supercavity in the open environment, which can be used to guide engineering practice. |
| Key words:
ventilated supercavity
flow field
supercavity's dimension
pressure distribution
multiphase flow
SST turbulence model
underwater vehicle
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| 收稿日期: 2019-09-09
修回日期:
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| DOI: 10.1051/jnwpu/20203830478 |
| 基金项目: 国家自然科学基金（51909218，51679202）中国博士后科学基金（2019M653747）资助 |
| 通讯作者: 黄闯(1989-),西北工业大学研究员,主要从事超空泡航行器设计研究。E-mail:huangchuang@nwpu.edu.cn
Email：huangchuang@nwpu.edu.cn |
| 作者简介: 许海雨(1991-),西北工业大学博士生,主要从事通气超空化流动结构及泄气机理研究。
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| 作者相关文章 |
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| 许海雨 在本刊中的所有文章 |
| 罗凯 在本刊中的所有文章 |
| 黄闯 在本刊中的所有文章 |
| 左振浩 在本刊中的所有文章 |
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