|
|||||
|
|
| 基于CFD的低扬程泵装置变速特性及相似性 | |
| 引用本文： | 张仁田,姚林碧,朱红耕,张礼华,魏军.基于CFD的低扬程泵装置变速特性及相似性[J].排灌机械,2010,28(2):107-111. |
| 作者姓名： | 张仁田 姚林碧 朱红耕 张礼华 魏军 |
| 作者单位： | 1. 扬州大学,水利科学与工程学院,江苏,扬州,225009;江苏省水利勘测设计研究院有限公司,江苏,扬州225009 2. 江苏省水利勘测设计研究院有限公司,江苏,扬州225009 3. 扬州大学,水利科学与工程学院,江苏,扬州,225009 4. 扬州市水利局,江苏,扬州,225001 |
| 基金项目： | "十一五"国家科技支撑计划重大项目，国家自然科学基金资助项目，江苏省高校自然科学基金资助项目 |
| 摘 要： | 根据南水北调工程中低扬程泵站采用变频调速进行工况调节的运行要求,应用相似准则分别分析了泵和泵装置在不同转速下能量特性的关系,指出不同转速下泵的流量扬程关系特性符合相似律,但由于进、出水流道中的流动受到水泵流动的影响,泵装置的流量扬程关系在不同转速下不完全符合相似律。采用计算流体动力学方法分析了典型灯泡贯流泵装置在3种不同转速下出水流道的流场分布,发现随着转速差距的加大,同一截面上的速度分布甚至出现相反的分布规律,进一步证明了不同转速下的泵装置特性不完全符合相似律,因此变速工况下的低扬程泵装置特性不能采用传统的相似律预测. |
| 关 键 词： | 水泵 泵装置 低扬程泵站 相似性 变速工况 |
Low-head pumping system performances and affinity issues under variable speed operation based on CFD |
|
| Zhang Rentian,Yao Linbi,Zhu Honggeng,Zhang Lihua,Wei Jun.Low-head pumping system performances and affinity issues under variable speed operation based on CFD[J].Drainage and Irrigation Machinery,2010,28(2):107-111. | |
| Authors: | Zhang Rentian Yao Linbi Zhu Honggeng Zhang Lihua Wei Jun |
| Institution: | 1.College of Hydraulic Science and Engineering/a>;Yangzhou University/a>;Yangzhou/a>;Jiangsu 225009/a>;China/a>;2.Jiangsu Surveying & Design Institute of Water Resources Co.Ltd./a>;3.Yangzhou Water Conservancy Bureau/a>;Jiangsu 225001/a>;China |
| Abstract: | In order to adjust working conditions of variable speed operations with variable frequency drives applied in low-head pumping stations in the South-to-North Water Diversion Project,the relationship between heads and discharge rates of pump and pumping system under different rotational speeds were analyzed with affinity law.It is found out that the relationship between heads and discharge rates of pump corresponds to the conventional affinity law under different speeds,but that of pump system does not.The fl... |
| Keywords: | pump pumping system low-head pumping stations affinity issues variable speed condition |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |