| 黄河下游滩区村台绕流特性研究 |
| |
| 引用本文： | 原平新,刘沛清.黄河下游滩区村台绕流特性研究[J].应用基础与工程科学学报,2011,19(3):449-458. |
| |
| 作者姓名： | 原平新 刘沛清 |
| |
| 作者单位： | 1. 北京航空航天大学，流体力学教育部重点实验室,北京100191;黄河勘测规划设计有限公司,河南郑州450003
2. 北京航空航天大学，流体力学教育部重点实验室,北京100191 |
| |
| 基金项目： | 由黄河洪水管理亚行贷款项目办公室资助 |
| |
| 摘 要： | 黄河下游滩区村台是滩区居民常用的避洪工程结构形式,不同的矩形村台结构、村台辅道布置及辅道坡度,在不同夹角洪水作用下村台周围流场的特性差异很大.本文采用数值模拟方法,对不同方向来水、长宽比、村台辅道布置及辅道坡度作用下的滩区村台三维绕流特性,进行了数值模拟研究;揭示了村台来流方向角、长宽比、村台辅道布置及辅道坡度对村台周围绕流特性的影响;研究发现:当村台长宽比K<1时,来流方向角α=0°时,村台阻力较大;而当村台长宽比K>1时,来流方向角α=0°时,村台阻力最小;村台建设的最佳长宽比为1.5—2.0;相同的辅道坡度下,垂直来流方向时村台的时均阻力明显大于平行于来流方向时村台的时均阻力;村台最佳辅道坡度为1∶10—1∶15.
|
| 关 键 词： | 黄河 下游滩区 村台 绕流特性 |
Characteristic Research on Flow around Village Platform in the Downstream Yellow River Bottomland |
| |
| YUAN Pingxin,LIU Peiqing.Characteristic Research on Flow around Village Platform in the Downstream Yellow River Bottomland[J].Journal of Basic Science and Engineering,2011,19(3):449-458. |
| |
| Authors: | YUAN Pingxin LIU Peiqing |
| |
| Institution: | YUAN Pingxin1,2,LIU Peiqing1(1.Key laboratory for Fluid Mechanics of Ministry of Education,Beijing University of Aeronautics and Astronautics,Beijing 100191 China,2.Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China) |
| |
| Abstract: | Village platform is an important structure to avoid flooding for residents in the downstream Yellow River bottomland.Characteristics of flow field around village platform with different rectangle structures,auxiliary road locations and road slopes vary a lot under the effects of various flow angles.Numerical simulation was carried out on three dimensional flow patterns around village platform under the effects of different inflow directions,platform aspect ratios,auxiliary road locations and road slopes.The... |
| |
| Keywords: | the Yellow River downstream bottomland village platform flow characteristics |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
