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| 作者 | Kaiheng Hu ; Yong Li
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| 刊名 | Journal of Hydraulic Engineering
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| 出版日期 | 2013
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| 卷号 | 139期号:1页码:65–69 |
| 关键词 | Debris flows
Manning resistance coefficient
Mean flow velocity
Flow width
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| 通讯作者 | Kaiheng Hu
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| 英文摘要 |
Debris flow in a wide open downstream channel has a significant transverse velocity component that strongly influences its mean longitudinal velocity. Investigation of observation data of debris-flow surges at Jiangjia Ravine in China shows the dependency of Manning resistance of debris flows on the ratio of flow width to depth. Regression fit reveals a power function relationship between the Manning resistance coefficient and the width-to-depth ratio. This derives a new formula of mean velocity incorporating the influence of flow width. The result indicates that the width-to-depth ratio can be viewed as a kind of shape roughness analogous to grain roughness in the Darcy-Weisbach resistance coefficient expression.
Read More: http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29HY.1943-7900.0000648
Debris flow in a wide open downstream channel has a significant transverse velocity component that strongly influences its mean longitudinal velocity. Investigation of observation data of debris-flow surges at Jiangjia Ravine in China shows the dependency of Manning resistance of debris flows on the ratio of flow width to depth. Regression fit reveals a power function relationship between the Manning resistance coefficient and the width-to-depth ratio. This derives a new formula of mean velocity incorporating the influence of flow width. The result indicates that the width-to-depth ratio can be viewed as a kind of shape roughness analogous to grain roughness in the Darcy-Weisbach resistance coefficient expression.
Read More: http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29HY.1943-7900.0000648
Debris flow in a wide open downstream channel has a significant transverse velocity component that strongly influences its mean longitudinal velocity. Investigation of observation data of debris-flow surges at Jiangjia Ravine in China shows the dependency of Manning resistance of debris flows on the ratio of flow width to depth. Regression fit reveals a power function relationship between the Manning resistance coefficient and the width-to-depth ratio. This derives a new formula of mean velocity incorporating the influence of flow width. The result indicates that the width-to-depth ratio can be viewed as a kind of shape roughness analogous to grain roughness in the Darcy-Weisbach resistance coefficient expression.
Read More: http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29HY.1943-7900.0000648
Debris flow in a wide open downstream channel has a significant transverse velocity component that strongly influences its mean
longitudinal velocity. Investigation of observation data of debris-flow surges at Jiangjia Ravine in China shows the dependency of Manning resistance of debris flows on the ratio of flow width to depth. Regression fit reveals a power function relationship between the Manning resistance coefficient and the width-to-depth ratio. This derives a new formula of mean velocity incorporating the influence of flow width. The result indicates that the width-to-depth ratio can be viewed as a kind of shape roughness analogous to grain roughness in the Darcy-Weisbach resistance coefficient expression. |
| 语种 | 英语
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| 公开日期 | 2013-01-29
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| 源URL | [http://192.168.143.20:8080/handle/131551/4854]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
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推荐引用方式
GB/T 7714 |
Kaiheng Hu,Yong Li. Influence of Flow Width on Mean Velocity of Debris Flows in Wide Open Channel[J]. Journal of Hydraulic Engineering,2013,139(1):65–69.
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| APA |
Kaiheng Hu,&Yong Li.(2013).Influence of Flow Width on Mean Velocity of Debris Flows in Wide Open Channel.Journal of Hydraulic Engineering,139(1),65–69.
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| MLA |
Kaiheng Hu,et al."Influence of Flow Width on Mean Velocity of Debris Flows in Wide Open Channel".Journal of Hydraulic Engineering 139.1(2013):65–69.
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