甘肃省水利水电勘测设计研究院有限责任公司
纸质出版:2024
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姚春萍, 杨江龙, 汪精云, 等. 河流中低淹没度下刚性沉水植被阻力系数改进研究[J]. 水电能源科学, 2024,42(4):62-66.
姚春萍, 杨江龙, 汪精云, et al. 河流中低淹没度下刚性沉水植被阻力系数改进研究[J]. 2024, 42(4): 62-66.
姚春萍, 杨江龙, 汪精云, 等. 河流中低淹没度下刚性沉水植被阻力系数改进研究[J]. 水电能源科学, 2024,42(4):62-66. DOI: 10.20040/j.cnki.1000-7709.2024.20230864.
姚春萍, 杨江龙, 汪精云, et al. 河流中低淹没度下刚性沉水植被阻力系数改进研究[J]. 2024, 42(4): 62-66. DOI: 10.20040/j.cnki.1000-7709.2024.20230864.
准确评估植被阻力对预测植被影响下的河流流速分布具有重要意义。采用已有研究数据,验证了6种挺水植被阻力系数公式在刚性沉水植被流计算中的适用性,并在已有研究基础上考虑淹没度影响,针对低淹没度情形,提出了改进的阻力系数公式。结果表明,各公式平均计算精度接近,计算流速与实测流速相对误差均在10.20%~15.19%之间;改进阻力系数公式计算精度良好,公式计算流速与实测流速相对误差为3.40%
可用于植被层流速估算,适用范围为淹没度1
<
H/h
v
<
2且固体体积分数0
<
?≤0.02。
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