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| 大型渠道清污机栅体结构的内部流态 | |
| 作者姓名： | 时伯华 常青 杜培文 李永顺 |
| 作者单位： | 1. 南水北调东线山东干线有限责任公司,济南,250013 2. 山东省水利勘测设计院,济南,250013 3. 山东省南水北调工程建设管理局,济南,250013 |
| 基金项目： | “十一五”国家科技支撑计划项目“大型渠道设计与施工新技术研究”(2006BAB04A02) |
| 摘 要： | 大型清污设备是南水北调等长距离调水工程的关键设备,拦污栅是清污机的重要部件,用以拦阻水流挟带的污物进入流道,保证调水沿线顺利正常运行。拦污栅的结构断面型式和布置是影响水流流态的重要因素。运用流体力学(CFD)数值模拟分析对栅体结构不同断面型式和布置情况进行内部流态模拟分析,通过对不同方案的水平、垂直截面速度等值线图以及三维流场图的分析,得出流线型栅条、圆头流线型主梁水平布置、边梁为矩形箱梁的栅体结构为最优方案,大跨度比小跨度的要合理,流态和流速都更理想,水流均匀、平稳,且没有回流及涡流区,流速分布更对称。因此,对拦污栅体多种不同方案的优化研究,通过三维数值模拟计算验证了优化效果。 |
| 关 键 词： | 大型渠道 清污机 拦污栅体 数值模拟 内部流态 三维流场 大跨度 |
Study of Interior Flow-state in Trash Rack Structure of Clean-feculence Machine for Large-scale Channels |
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| Authors: | SHI Bo-hua CHANG-Qing DU Pei-wen LI Yong-shun |
| Affiliation: | SHI Bo-hua1,CHANG-Qing1,DU Pei-wen2,LI Yong-shun3(1.The Eastern Road of South-to-North Water Diversion Shandong Main Line Co.Ltd,Ji'nan 250013,China,2.Shandong Institute of Survey and Design for Water Conservancy,3.Construction & Management Bureau of the South-to-North Water Transfer Project in Shandong Province,China) |
| Abstract: | Large-scale decontamination equipment is a key equipment needed for long-distance water transfer projects,such as the South-to-North Water Diversion Project.Trash Rack is the main working parts,which is used to block dirt into the flow channel for ensuring the smooth running along the water diversion.Trash-type cross-section of the structure and layout are the important affecting factors of the flow state.The interior flow of different trash rack structure sect-sides of channel clean-feculence machine is an... |
| Keywords: | large-scale channel clean-feculence machine trash rack structure numerical value simulation interior flow-state three-dimensional large span |
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