| 泥石流对山区风电场冲击防治研究 |
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| 引用本文： | 方君,王立忠,洪义,赵吉东.泥石流对山区风电场冲击防治研究[J].太阳能学报,2022,43(2):357-364. |
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| 作者姓名： | 方君 王立忠 洪义 赵吉东 |
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| 作者单位： | 1.浙江大学建筑工程学院,杭州 310058; 2.香港科技大学土木与环境工程系,九龙 999077 |
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| 基金项目： | 国家重点研发计划（2016YFC0800200）；;国家自然科学基金（51779221）；;浙江省重点研发计划（2018C03031）；;浙江省“钱江人才”计划（QJD1602028）； |
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| 摘 要： | 为研究泥石流与刚性防护结构的作用,使用耦合的离散元方法和计算流体力学方法（CFD-DEM）,分别模拟单相流和两相流对刚性防护结构的冲击。计算结果表明：单相流以堆积机制为主,而两相流表现出爬升机制;两相流中由于液体的拖曳和浮力作用,颗粒内部的接触数减少,能量耗散降低,导致颗粒的爬升高度和最大冲击力分别增加426%和488%。
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| 关 键 词： | 陆上风电场 数值模拟 流固耦合 泥石流 防护结构 冲击 |
| 收稿时间： | 2020-01-13 |
STUDY ON IMPACT MITIGATION OF DEBRIS FLOW TO MOUNTAINOUS WIND FARMS |
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| Fang Jun,Wang Lizhong,Hong Yi,Zhao Jidong.STUDY ON IMPACT MITIGATION OF DEBRIS FLOW TO MOUNTAINOUS WIND FARMS[J].Acta Energiae Solaris Sinica,2022,43(2):357-364. |
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| Authors: | Fang Jun Wang Lizhong Hong Yi Zhao Jidong |
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| Affiliation: | 1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China; 2. Department of Civil and Environmental Engineering, Hong Kong University of Science and Technology, Kowloon 999077, China |
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| Abstract: | Debris flow is an extremely dangerous natural hazard, which routinely destroys wind farms in mountainous terrains. To intercept this hazardous phenomenon, rigid barriers are commonly installed in mountainous regions to mitigate the hazard of debris flow. In order to study the impact of debris flow on a rigid barrier, this paper presents a coupled Discrete Element Method and Computational Fluid Dynamics approach. This approach compares the interactions between single- and two-phase flows and a rigid barrier. The results show that the single-phase flow exhibits a predominant pile-up mechanism, while the two-phase flow in this study show a distinct run-up mechanism. Compared to the single-phase flow, due to the drag and buoyancy effect of water, the number of contacts inside particles is reduced, and less energy is dissipated. Correspondingly, the run-up height and maximum impact force of granular system increases by 426% and 488%, respectively. |
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| Keywords: | onshore wind farm computer simulation fluid structure interaction debris flow rigid barrier impact |
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