Determination of Resistance Due to Shrubs and Woody Vegetation
Determination of Resistance Due to Shrubs and Woody Vegetation
复制标题
灌木和木本植物抗性的测定
DOI：
10.21236/ada383997
复制
发表时间：
2000
期刊：
影响因子：
1.9
通讯作者：
R. R. Copeland
中科院分区：
文献类型：
--
作者：
Gary E. Freeman;W. H. Rahmeyer;R. R. Copeland
摘要：进行水槽研究以确定随湍流变形的柔性植物的水力阻力。研究了部分浸没和完全浸没的植物。灵活的茎和植物叶团的不同形状使对抗性的理解变得非常复杂。植物形状随流动的变形排除了使用恒定堵塞或植物密度来预测阻力。本研究考虑了植物类型、植物几何形状、植物密度、植物灵活性以及沉水和部分沉水植物等变量对渠道阻力的影响。开发了回归方程来确定曼宁粗糙度系数。
Abstract : Flume studies were conducted to determine hydraulic resistance of flexible plants that deform with turbulent flow. Both partially submerged and fully submerged plants were studied. The flexible stems and varying shapes of a plant leaf mass greatly complicate the understanding of resistance. The deformation of plant shape with flow precludes the use of constant blockage or plant density in predicting resistance. This study considers the effects on channel resistance for the variables of plant type, plant geometry, plant density, plant flexibility, and submerged and partially submerged plants. Regression equations were developed for determining the Manning's roughness coefficient.