| 低比转速叶轮内部流动的数值计算 |
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| 引用本文： | 陈洁达,崔宝玲,万忠,郑齐銮,朱祖超.低比转速叶轮内部流动的数值计算[J].机电工程,2010,27(3):21-24. |
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| 作者姓名： | 陈洁达 崔宝玲 万忠 郑齐銮 朱祖超 |
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| 作者单位： | 1. 浙江理工大学,机械与自动控制学院,浙江,杭州,310018
2. 浙江天德泵业有限公司,浙江,苍南,325800 |
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| 基金项目： | 国家自然科学基金资助项目(20706049,50879080);;浙江省重大科技攻关计划资助项目(2008C11056);;浙江理工大学科研启动基金资助项目(0603284-Y) |
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| 摘 要： | 为了解复合叶轮内部流动特性,采用雷诺时均Navier-Stokes方程和Spalart-Allmaras湍流模型对4长叶片的普通叶轮和4长4中8短16叶片的复合叶轮内部流动进行了数值模拟,得到了设计工况下两种叶轮内部流场分布,分析了中、短分流叶片对叶轮内部流场的影响。计算结果表明:采用长、中、短叶片设计的复合叶轮可以改善流道内流场分布,提高长叶片吸力面压力,有效地阻止液流的脱流,复合叶轮可以获得更高的静压差,有效地提高了离心泵的扬程。
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| 关 键 词： | 离心泵 低比转速 复合叶轮 数值模拟 |
Numerical computation of inner flow in low-specific-speed impeller |
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| CHEN Jie-da,CUI Bao-ling,WAN Zhong,ZHENG Qi-luan,ZHU Zu-cao.Numerical computation of inner flow in low-specific-speed impeller[J].Mechanical & Electrical Engineering Magazine,2010,27(3):21-24. |
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| Authors: | CHEN Jie-da CUI Bao-ling WAN Zhong ZHENG Qi-luan ZHU Zu-cao |
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| Affiliation: | 1.Faculty of Mechanical Engineering and Automation;Zhejiang Sci-Tech University;Hangzhou 310018;China;2.Zhejiang Tiande Pumps Co.;Ltd.;Cangnan 325800;China |
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| Abstract: | Aiming at realizing the inner flow performance of complex centrifugal impellers,the Navier-Stokes equations and the Spalart-Allmaras turbulence model were carried out to simulate the inner flow field in low-specific-speed complex centrifugal impellers with four-long blades and four-long four-middle eight-short blades.The distributions of velocity and pressure were obtained,and the properties of inner flow inside the volute were also analyzed.The calculation result shows that middle and short blades can impr... |
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| Keywords: | centrifugal pump low specific speed complex impeller numerical simulation |
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