| 正弦形沙丘背风坡回流区特性研究 |
| |
| 引用本文： | 祁紫薇,王硕,凡凤仙,胡晓红.正弦形沙丘背风坡回流区特性研究[J].上海理工大学学报,2020,42(1):16-21,28. |
| |
| 作者姓名： | 祁紫薇 王硕 凡凤仙 胡晓红 |
| |
| 作者单位： | 上海理工大学能源与动力工程学院,上海 200093;上海理工大学上海市动力工程多相流动与传热重点实验室,上海 200093;上海理工大学能源与动力工程学院,上海 200093;上海理工大学上海市动力工程多相流动与传热重点实验室,上海 200093;上海理工大学能源与动力工程学院,上海 200093;上海理工大学上海市动力工程多相流动与传热重点实验室,上海 200093;上海理工大学能源与动力工程学院,上海 200093;上海理工大学上海市动力工程多相流动与传热重点实验室,上海 200093 |
| |
| 基金项目： | 国家自然科学基金资助项目（51206113，51776128，51576130）；上海市科委科研计划项目（13DZ2260900） |
| |
| 摘 要： | 利用开源计算流体力学软件OpenFOAM的标准k-ε湍流模型,对沙丘表面流场进行数值模拟,获得了距沙丘表面不同高度的流场速度分布曲线,考察了沙丘背风坡回流区特性受沙丘高度和宽度的影响,分析了回流区形成的原因。结果表明:沙丘高度较低时,在背风坡贴近沙丘表面的区域气流速度先降低后增加;随着沙丘高度的增加,背风坡气流速度降低更为迅速,气流不稳定,出现回流区。研究还发现:在沙丘宽度或高度一定的情况下,随着宽高比的增加,回流区尺度减小;回流区尺度不仅取决于宽高比,还取决于沙丘宽度与高度的数值。沙丘背风坡回流区萌生时,贴近沙丘表面出现一系列小涡,减小沙丘宽高比,涡的尺度增大、强度增加,演变为回流区。
|
| 关 键 词： | 正弦形沙丘 流场 回流区 数值模拟 |
| 收稿时间： | 2019/1/15 0:00:00 |
Recirculation zone characteristics at the leeward side of a sinusoidal dune |
| |
| QI Ziwei,WANG Shuo,FAN Fengxian and HU Xiaohong.Recirculation zone characteristics at the leeward side of a sinusoidal dune[J].Journal of University of Shanghai For Science and Technology,2020,42(1):16-21,28. |
| |
| Authors: | QI Ziwei WANG Shuo FAN Fengxian and HU Xiaohong |
| |
| Institution: | School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China,School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China,School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China and School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
| |
| Abstract: | |
| |
| Keywords: | sinusoidal dune flow field recirculation zone numerical simulation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《上海理工大学学报》浏览原始摘要信息 |
| 点击此处可从《上海理工大学学报》下载免费的PDF全文 |
|
