| 轮毂轮缘对混流泵叶轮三元反问题设计的影响 |
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| 引用本文： | 常书平,姚丁元,李昆鹏,方先进.轮毂轮缘对混流泵叶轮三元反问题设计的影响[J].排灌机械工程学报,2021,39(5):445-450. |
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| 作者姓名： | 常书平 姚丁元 李昆鹏 方先进 |
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| 作者单位： | 1. 中国人民解放军63983部队, 江苏 无锡 214035; 2. 广州船舶及海洋工程设计研究院, 广东 广州 510250 |
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| 摘 要： | 为提高叶片设计可控度,开展轮毂与轮缘对混流泵叶轮三元反问题设计的影响研究.基于一种无黏与有黏迭代的叶片三元反问题设计方法,以某比转数ns=449的混流泵为研究对象,在保持叶片载荷分布、进口环量、出口环量等控制参数不变的基础上,通过改变轮毂与轮缘形状设计出系列叶轮.基于剪切应力输运(SST)湍流模型和SIMPLEC算法,对叶轮内流场特性进行数值计算.结果表明:轮毂与轮缘对叶片几何造型与流场特性具有重要影响;通过轮毂与轮缘调节可优化叶轮高效区范围,过流通道面积增大使大流量工况效率有所提高;轮毂形状对轮毂流面的压力分布影响较大,轮缘形状对整个叶片压力分布有较明显影响,叶轮出口过流通道面积过小将造成轮毂流面出现压力波谷现象.三维反问题设计和三维正问题数值模拟相结合的方法可在混流泵设计中发挥重要作用,具有一定的工程应用价值.
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| 关 键 词： | 混流泵 叶轮 三元反问题设计 轮毂 轮缘 数值模拟 |
| 收稿时间： | 2020-02-24 |
Influence of hub and shroud on three-dimensional inverse design of mixed-flow pump impeller |
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| CHANG Shuping,YAO Dingyuan,LI Kunpeng,FANG Xianjin.Influence of hub and shroud on three-dimensional inverse design of mixed-flow pump impeller[J].Journal of Drainage and Irrigation Machinery Engineering,2021,39(5):445-450. |
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| Authors: | CHANG Shuping YAO Dingyuan LI Kunpeng FANG Xianjin |
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| Institution: | 1. Chinese People′s Liberation Army 63983 Troops, Wuxi, Jiangsu 214035, China; 2. Guangzhou Marine Engineering Corporation, Guangzhou, Guangdong 510250, China |
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| Abstract: | In order to improve the controllability of blade design, the influence of hub and shroud on the 3D inverse design of mixed-flow pump impeller was studied. Based on the 3D inverse design me-thod with inviscid and viscous iteration, a mixed-flow impeller with the specific speed 449 was taken as the research object, and a series of impellers were designed by changing the shape of hub and shroud on basis of unchanged control parameters such as blade load distribution, inlet and outlet circulation. Based on SST turbulence model and SIMPLEC algorithm, the flow characteristics of the impellers were calculated numerically. The results show that hub and shroud have significant influence on blade geo-metry and flow field characteristics. The high-efficiency working area can be optimized by adjusting hub and shroud and the efficiency under high flow condition can be improved by increasing the area of flow passage. The hub has a significant influence on pressure distribution on the blade hub section, while the shroud shape has a great influence on pressure distribution of the whole blade. The small area of the impeller outlet flow passage causes a pressure trough on the blade hub section. The combination of 3D inverse design and 3D forecast simulation can play an important role in mixed-flow pump design, which has certain engineering application value. |
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| Keywords: | mixed-flow pump impeller three-dimensional inverse design hub shroud numerical simulation |
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