| 沙丘迎风坡曲率对风速加速因子的影响 |
| |
| 引用本文： | 李桂宣,薄天利.沙丘迎风坡曲率对风速加速因子的影响[J].中国沙漠,2011,30(3):661-664. |
| |
| 作者姓名： | 李桂宣 薄天利 |
| |
| 作者单位： | 兰州大学西部灾害与环境力学教育部重点实验室/土木工程与力学学院,甘肃兰州,730000 |
| |
| 基金项目： | 国家重点基础研究发展规划项目(2009CB421304); 教育部科学研究重大项目(308022); 兰州大学“中央高校基本科研业务费专项资金”重点项目(lzujbky-2009-k01)共同资助 |
| |
| 摘 要： | 采用FLUENT软件对沙丘迎风坡风速加速过程进行计算,研究沙丘高度、来流风速、迎风坡角度和曲率对迎风坡加速因子的影响,结果显示,来流风速和沙丘高度对加速因子的影响不明显,迎风坡曲率和迎风坡角度对加速因子有明显的影响,并给出加速因子随曲率和迎风坡角度变化的拟合公式。
|
| 关 键 词： | 加速因子 沙丘 迎风坡曲率 来流风速 FLUENT软件 |
| 收稿时间： | 2010-12-1 |
| 修稿时间： | 2011-2-28 |
Effect of Windward Slope Curvature of Sand Dunes on Wind Speed-up Factor |
| |
| LI Gui-xuan
,
BO Tian-li.Effect of Windward Slope Curvature of Sand Dunes on Wind Speed-up Factor[J].Journal of Desert Research,2011,30(3):661-664. |
| |
| Authors: | LI Gui-xuan BO Tian-li |
| |
| Institution: | LI Gui-xuan,BO Tian-li(Key Laboratory of the Ministry of Education for Mechanics on Disaster and Environment in Western China,School of Civil Engineering and Mechanics,Lanzhou University,Lanzhou 730000,China) |
| |
| Abstract: | In this paper,the wind speed-up process on dune windward slope was calculated by using of the FLUENT software,and the influences of dune height,wind velocity,windward slope and curvature were discussed.The results indicated that windward slope angle and curvature significantly influenced the speed-up factor,and there are ideal fitting function of wind speed-up factor changing with windward slope angle and curvature,however,dune height and wind velocity had little effect.Finally,the formula about speed-up fa... |
| |
| Keywords: | speed-up factor dune windward slope curvature incoming velocity FLUENT software |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《中国沙漠》浏览原始摘要信息 |
| 点击此处可从《中国沙漠》下载免费的PDF全文 |
|
