| Wemco浮选机叶轮叶片倾角的数值模拟 |
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| 引用本文： | 周原彬,匡敬忠,方夕辉,罗大芳,刘鹏飞.Wemco浮选机叶轮叶片倾角的数值模拟[J].有色金属工程,2018,8(5). |
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| 作者姓名： | 周原彬 匡敬忠 方夕辉 罗大芳 刘鹏飞 |
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| 作者单位： | 江西理工大学资源与环境工程学院 |
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| 基金项目： | 江西省教育厅科技项目(GJJ150613)*通讯 |
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| 摘 要： | 针对Wemco自吸式浮选机,采用CFD方法对叶片倾角β分别为前倾(-22.5°、-37.5°)、径向(0°)和后倾(22.5°、37.5°)浮选机的流场进行数值模拟,探讨了叶片倾角对浮选机内流场特征、湍动能和压力分布的影响,分析了不同转速下叶片倾角对Wemco浮选机循环量和功耗的影响。结果表明,叶片倾角对浮选机内流场结构影响较小,但对叶轮旋转区域的轴向速度、湍动能和压差等影响较大。叶片倾角为0°时,流体在叶轮旋转区域的轴向速度、湍动能和压差最大;叶轮循环量和功耗均随着转速的增加而增加,径向叶片比前倾和后倾叶片的循环量和功耗更大。
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| 关 键 词： | 自吸式浮选机 叶轮 流场 湍动能 数值模拟 |
| 收稿时间： | 2017/11/12 0:00:00 |
| 修稿时间： | 2017/11/12 0:00:00 |
Numerical Simulation of the Impeller Angle in Wemco Flotation Cell |
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| Zhou Yuanbin,Kuang Jingzhong,Fang Xihui,Luo Dafang and Liu Pengfei.Numerical Simulation of the Impeller Angle in Wemco Flotation Cell[J].Nonferrous Metals Engineering,2018,8(5). |
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| Authors: | Zhou Yuanbin Kuang Jingzhong Fang Xihui Luo Dafang and Liu Pengfei |
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| Affiliation: | Faculty of Resource and Environment Engineering,Jiangxi University of Science and Technology,Faculty of Resource and Environment Engineering,Jiangxi University of Science and Technology,Faculty of Resource and Environment Engineering,Jiangxi University of Science and Technology,Faculty of Resource and Environment Engineering,Jiangxi University of Science and Technology,Faculty of Resource and Environment Engineering,Jiangxi University of Science and Technology |
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| Abstract: | The flow field of forward impeller( -22.5o, -37.5°), radial impeller(0°) and backward impeller(22.5°, 37.5°) in Wemco flotation cell is simulated by CFD. The distribution characteristics, including velocity, turbulent kinetic energy and pressure of different impeller angle were discussed The relationship of circulation volume and power consumption at different rotational speeds is analyzed. The results show that the impeller angle has little affected the flow pattern. But it significantly affects the axial velocity, turbulent kinetic energy and differential pressure on the rotaing area. The axial velocity, turbulent kinetic energy and differential pressure of the 0° impeller angle are the lagest in the impeller area. Both the circulation volume and power consumption increase with the rotation speed rises. The circulation volume and power consumption of radial impeller is greater than forward and backward impeller flotation cell. |
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| Keywords: | self-aspirated flotation machine impeller flow field Turbulent kinetic energy numerical simulation |
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