Applicability of Flow Resistance Formulae for Sand-Bed Channels: An Assessment Using a Very Large Data Set
文献类型：期刊论文
| 作者 | Peng, Hao1,2; Huang, He Qing1,2; Yu, Guoan1; Zhang, Hongwu3 |
| 刊名 | FRONTIERS IN ENVIRONMENTAL SCIENCE
 |
| 出版日期 | 2022-02-16 |
| 卷号 | 10页码:14 |
| 关键词 | flow resistance sand-bed channel large dataset Manning roughness coefficient bedforms error analysis |
| DOI | 10.3389/fenvs.2022.840653 |
| 通讯作者 | Huang, He Qing(huanghq@igsnrr.ac.cn) |
| 英文摘要 | Among numerous flow resistance formulae for sand-bed channels, this study selected five for evaluation and in order to cover flow conditions in sand-bed river channels as widely as possible, a total of 1,636 sets of field measures were collected from the hydrological stations of two large river systems of China-the Yellow and Yangtze Rivers, in addition to the data compiled by Brownlie. The performance of the selected formulae in yielding the values of Manning resistance coefficient n was evaluated against the total of 6,805 datasets. In many cases, the formula of Ma et al. yielded unreasonable n values of <0, while that of Deng et al. and formulae 1 and 2 of Zhang et al. yielded n values with large errors. The formula of Wu and Wang yielded n values varying within the scope only in the case of n < 0.04. By dividing the absolute relative errors (AREs) from the selected formulae into six groups of 0-0.05, 0.05-1, 0.1-0.2, 0.2-0.5, 0.5-1, and >1, it can be found that, for all five selected formulae, ARE occurred in the group 0.2-0.5 occupied the largest percentage, while in each of the adjacent groups of 0.5-1 and 0.1-0.2 it also occupied a very large percentage. Hence, all five formulae still need to improve their predicting ability. |
| WOS关键词 | SEDIMENT TRANSPORT ; ROUGHNESS |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000765936500001 |
| 出版者 | FRONTIERS MEDIA SA |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/171926]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Huang, He Qing |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Tsinghua Univ, State Key Lab Hydro Sci & Engn, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Peng, Hao,Huang, He Qing,Yu, Guoan,et al. Applicability of Flow Resistance Formulae for Sand-Bed Channels: An Assessment Using a Very Large Data Set[J]. FRONTIERS IN ENVIRONMENTAL SCIENCE,2022,10:14. |
| APA | Peng, Hao,Huang, He Qing,Yu, Guoan,&Zhang, Hongwu.(2022).Applicability of Flow Resistance Formulae for Sand-Bed Channels: An Assessment Using a Very Large Data Set.FRONTIERS IN ENVIRONMENTAL SCIENCE,10,14. |
| MLA | Peng, Hao,et al."Applicability of Flow Resistance Formulae for Sand-Bed Channels: An Assessment Using a Very Large Data Set".FRONTIERS IN ENVIRONMENTAL SCIENCE 10(2022):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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