Modeling the effect of humidity on the threshold friction velocity of coal particles
文献类型：期刊论文
| 作者 | Zhang, Xiaochun ; Chen, Weiping ; Ma, Chun ; Zhan, Shuifen |
| 刊名 | ATMOSPHERIC ENVIRONMENT
 |
| 出版日期 | 2012 |
| 卷号 | 56页码:154－160 |
| 关键词 | Threshold friction velocity Mathematical model Coal particles Humidity content Wind tunnel |
| ISSN号 | 1352-2310 |
| 中文摘要 | Coal particles emission could cause serious air pollution in coal production region and transport region. In coal mining industry, large amounts of water are regularly spayed to coal piles to prevent dust emission from the coal particles. The mechanism behind this measure is to manage the threshold friction velocity, which is an important parameter in controlling wind erosion and dust emission. Bagnold has developed a threshold friction velocity model for soil particles. However, the Bagnold model cannot be applied directly to coal particles as coal particles are quite different from soils in physical and chemical properties. We studied and modeled threshold friction velocity of coal particles under different humidities by using a wind tunnel. Results showed that the effects of humidity on coal particles' threshold friction velocity are related to the hydrophilic effect and adhesive effect. Bagnold model can be corrected by two new parameter items which explained the two effects. The new model, agreed well with wind tunnel measurements for coal particles with different size categories. Despite the fact the new model was developed for coal particles, its physical basis may allow the model application to other wind susceptible particles. (C) 2012 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000306347900019 |
| 公开日期 | 2014-11-05 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/7884]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, Xiaochun,Chen, Weiping,Ma, Chun,et al. Modeling the effect of humidity on the threshold friction velocity of coal particles[J]. ATMOSPHERIC ENVIRONMENT,2012,56:154－160. |
| APA | Zhang, Xiaochun,Chen, Weiping,Ma, Chun,&Zhan, Shuifen.(2012).Modeling the effect of humidity on the threshold friction velocity of coal particles.ATMOSPHERIC ENVIRONMENT,56,154－160. |
| MLA | Zhang, Xiaochun,et al."Modeling the effect of humidity on the threshold friction velocity of coal particles".ATMOSPHERIC ENVIRONMENT 56(2012):154－160. |
入库方式： OAI收割
来源：生态环境研究中心
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