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论文:2015,Vol:33,Issue(6):936-941 |
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引用本文： |
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黄闯, 罗凯, 党建军, 李代金. 流域径向尺度对自然超空泡的影响规律[J]. 西北工业大学学报 |
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Huang Chuang, Luo Kai, Dang Jianjun, Li Daijin. Influence of Flow Field's Radial Dimension on Natural Supercavity[J]. Northwestern polytechnical university |
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| 流域径向尺度对自然超空泡的影响规律 |
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| 黄闯, 罗凯, 党建军, 李代金 |
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| 西北工业大学 航海学院, 陕西 西安 710072 |
| 摘要: |
| 基于商用CFD软件Fluent 16.0,采用Mixture多相流模型、Schnerr and Sauer 空化模型和Realizable k-e湍流模型,建立了圆盘空化器超空化流动的三维计算模型,开展了模型验证工作,研究了流域径向尺度对自然超空泡形态的影响。结果表明流域径向尺度对超空泡形态有显著影响。流域径向尺度不足时空泡明显偏大;随流域径向尺度的增加超空泡的尺寸逐渐减小并收敛;当流域具有36倍以上的径向比尺度时,超空泡外形收敛并且与经验公式的计算结果吻合,可用于指导工程实践。 |
| 关键词:
空化
流场
数值模拟
湍流模型
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| Influence of Flow Field's Radial Dimension on Natural Supercavity |
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| Huang Chuang, Luo Kai, Dang Jianjun, Li Daijin |
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| School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China |
| Abstract: |
| To reveal how a flow field's radial dimension influences natural cavity, we establish the three-dimensional calculation model of disk cavitator's supercavity flow and then verifies it. The natural cavitation flow field is solved by combining the mixed multiphase flow model, the realizable k-e turbulence model with the Shnerr and Sauer cavitation model, using the commercial software Fluent 16.0. The computer simulation results show that the flow that the flow field's radial dimension has a significant influence on the natural supercavity's size. If the flow field's radial dimension is not large enough, a much bigger cavity than theoretical results may be obtained. However, with the enlargement of flow field, the supercavity's dimension decreases gradually and keeps stable in the end. If the radial dimension of flow field is 36 times larger than the maximum section's diameter of a theoretical cavity, the online of supercavity converges. In addition, the convergent supercavity outline coincides with the theoretical results and can be used to guide engineering practices. |
| Key words:
cavitation
computer simulation
flow fields
turbulence models
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| 收稿日期: 2015-04-23
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金(51579209)与陕西省自然科学基金(2014JQ7263)资助 |
| 通讯作者:
Email： |
| 作者简介: 黄闯(1989—),西北工业大学博士研究生,主要从事超空泡流体动力学的研究。
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| 作者相关文章 |
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| 黄闯 在本刊中的所有文章 |
| 罗凯 在本刊中的所有文章 |
| 党建军 在本刊中的所有文章 |
| 李代金 在本刊中的所有文章 |
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