1. 河北工程大学水利水电学院
2. 中国水利水电科学研究院水生态环境研究所
3. 水利部京津冀水安全保障重点实验室
4. 华北水利水电大学水利学院
纸质出版:2024
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李磊, 王伟杰, 董飞, 等. 植被弯曲形态对水流的阻力效应研究[J]. 水电能源科学, 2024,42(4):72-75.
李磊, 王伟杰, 董飞, et al. 植被弯曲形态对水流的阻力效应研究[J]. 2024, 42(4): 72-75.
李磊, 王伟杰, 董飞, 等. 植被弯曲形态对水流的阻力效应研究[J]. 水电能源科学, 2024,42(4):72-75. DOI: 10.20040/j.cnki.1000-7709.2024.20230647.
李磊, 王伟杰, 董飞, et al. 植被弯曲形态对水流的阻力效应研究[J]. 2024, 42(4): 72-75. DOI: 10.20040/j.cnki.1000-7709.2024.20230647.
植被化生态河道的阻力特性是环境水力学的研究热点之一。为探寻柔性植被不同弯曲倾角下的阻力特性,利用圆柱铝棒进行弯曲模拟柔性植被,并采用测力装置,对不同倾角状态下圆柱铝棒及流速范围开展室内水槽试验,首先研究直立圆柱铝棒阻力与流速之间的关系,得到的拖曳力系数C
d
符合已有研究,同时验证了测力装置的可靠性;随后开展不同倾角下的植被阻力试验,得到Vogel数随着倾角的减小呈逐渐降低最后突增的趋势。当植被弯曲时,已有的刚性直立植被丛模型不再适用,通过引入与倾角相关参数C
θ
对模型进行修正,显著提高了模拟精准度。研究结果可为生态植被化河道水力学精准模拟提供技术支撑。
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