| 多相混输泵动叶轮流道内气相分布规律研究 |
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| 引用本文： | 史广泰,叶勋云,刘宗库.多相混输泵动叶轮流道内气相分布规律研究[J].西华大学学报(自然科学版),2021,40(4):35-39. |
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| 作者姓名： | 史广泰 叶勋云 刘宗库 |
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| 作者单位： | 1.西华大学流体及动力机械教育部重点实验室，四川 成都 610039 |
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| 基金项目： | 国家重点研发计划（2018YFB0905200）；中国博士后科学基金特别资助（2017T100077）；中国博士后科学基金面上资助（2016M600090）；四川省教育厅科研项目资助（重点项目）（17ZA0366） |
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| 摘 要： | 为了揭示多相混输泵动叶轮流道内含气率的分布规律，基于标准k-ε湍流模型，以空气和纯水作为两相介质，采用Fluent软件在进口含气率为30%的工况下对泵内两相流态进行模拟，分析不同叶高下的气相分布特性。研究表明:在首级动叶轮叶片压力面轮毂附近的气相体积分数最大，而在次级和末级动叶轮叶片压力面上的气相体积分数基本相同；在不同压缩级动叶轮0.5倍叶高处，从动叶轮进口到出口，首级动叶轮叶片吸力面上的气相体积分数比次级和末级大；从轮毂到轮缘首级动叶轮叶片压力面上的气相体积分数与次级和末级动叶轮叶片压力面上的气相体积分数的差值逐渐减小，而在吸力面却逐渐增加。本文的研究结果为提高多相混输泵输送效率及运行稳定性提供了参考。
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| 关 键 词： | 多相混输泵 压缩级 动叶轮 含气率 |
| 收稿时间： | 2020-03-27 |
Study on Gas Distribution in the Flow Passage of Multiphase Pump Impeller |
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| SHI Guangtai,YE Xunyun,LIU Zongku.Study on Gas Distribution in the Flow Passage of Multiphase Pump Impeller[J].Journal of Xihua University:Natural Science Edition,2021,40(4):35-39. |
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| Authors: | SHI Guangtai YE Xunyun LIU Zongku |
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| Affiliation: | 1.Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039 China |
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| Abstract: | To reveal the gas distribution in the multiphase pump impeller passage, based on the standard k-ε turbulence, the air and pure water were used as two-phase media, and the Fluent software was employed to simulate the two-phase flow state under the inlet gas volume fraction of 30%, and the gas distribution characteristics under different blade spans were analyzed. Results show that the gas volume fraction near the hub of first stage impeller pressure side is the largest. However, the gas volume fraction on the second and last stage impeller pressure side is almost the same. From the impeller inlet to outlet at 0.5 span in difference compression stage, the gas volume fraction on the first stage impeller suction side is larger than that of the second and last stage impeller. The difference of the gas volume fraction on the pressure side from the hub to the shroud between the first stage impeller and second or last stage impeller is gradually decreased. However, the suction side is gradually increased. The results provide a reference for improving the efficiency and stability of a multiphase pump. |
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