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| DOI | 10.1016/j.aeolia.2017.11.004 |
| Shelter effect efficacy of sand fences: A comparison of systems in a wind tunnel | |
| Wang T.; Qu J.; Ling Y.; Liu B.; Xiao J. | |
| 发表日期 | 2018 |
| ISSN | 18759637 |
| 卷号 | 30 |
| 英文摘要 | The Lanzhou-Xinjiang High-speed Railway runs through an expansive wind area in the Gobi Desert and blown-sand disasters are a critical issue affecting its operation. To strengthen the blown-sand disaster shelter systems along the railway, the shelter effects of punching plate and wire mesh fences with approximately equal porosity (48%) were simulated in a wind tunnel. The experimental results showed that the wind velocity was reduced to a higher extent by the punching plate fence than by the wire mesh fence. When a single row of sand fencing was used, the wind velocity reduction coefficient (Rcz) values downwind of the punching plate fence and wire mesh fence reached 71.77% and 39.37%, respectively. When double rows of sand fencing were used, the Rcz values downwind of the punching plate and wire mesh fences were approximately 87.48% and 60.81%, respectively. For the flow field structure on the leeward side of the fencing, the deceleration zone behind the punching plate fence was more pronounced than that behind the wire mesh fence. The vortex zone was not obvious and the reverse flow disappeared for both types of fences, which indicates that the turbulent intensity was small. The sand-trapping efficiency of the wire mesh fence was close to that of punching plate fence. When a single row of sand fencing was set up, the total mass flux density decreased, on average, by 65.85% downwind of the wire mesh fence, and 75.06% downwind of the punching plate fence; when double rows of sand fencing were present, the total mass flux density decreased, on average, by 84.53% downwind of the wire mesh fence and 84.51% downwind of the punching plate fence. In addition, the wind-proof efficiency and the sand-proof efficiency of the punching plate fence and the wire mesh fence decreased with increasing wind velocities. Consequently, punching plate and wire mesh fences may effectively control the sand hazard in the expansive wind area of the Gobi Desert. © 2017 Elsevier B.V. |
| 英文关键词 | Blown-sand disaster; Flow field; Gobi Desert; Lanzhou-Xinjiang High-speed Railway; Mass flux density |
| URL | https://www2.scopus.com/inward/record.uri?eid=2-s2.0-85034661531&doi=10.1016%2fj.aeolia.2017.11.004&partnerID=40&md5=60426ac21859ad71d8a60b2a39e2d94c |
| 语种 | 英语 |
| scopus关键词 | comparative study; eolian process; experimental study; flow field; railway; sand; wind tunnel; wind velocity; Gobi Desert |
| 来源期刊 | Aeolian Research
 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/77193 |
| 推荐引用方式 GB/T 7714 | Wang T.； Qu J.； Ling Y.； Liu B.； Xiao J.. Shelter effect efficacy of sand fences: A comparison of systems in a wind tunnel[J]. 中国科学院西北生态环境资源研究院,2018,30. |
| APA | Wang T.； Qu J.； Ling Y.； Liu B.； Xiao J..(2018).Shelter effect efficacy of sand fences: A comparison of systems in a wind tunnel.Aeolian Research,30. |
| MLA | Wang T.； Qu J.； Ling Y.； Liu B.； Xiao J.."Shelter effect efficacy of sand fences: A comparison of systems in a wind tunnel".Aeolian Research 30(2018). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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