波浪作用下床面摩阻系数对于波浪变形和床面剪应力的准确计算,乃至海岸泥沙运动的合理描述具有重要意义。在收集大量波浪边界层和床面剪应力测量数据的基础上,建立了波浪作用下光滑和粗糙紊流边界层床面摩阻系数的显式计算公式,并进一步建立了可涵盖波浪边界层所有流态的摩阻系数显式计算公式,该公式具有不需迭代、不需判断流态、应用方便的特点。 Bed friction coefficient under wave action is very important for the accurate calculation of wave deformation and bed shear stress, and even a reasonable description of coastal sediment movement. Based on the collection of a large number of wave boundary layer and bed shear stress measurement data, an explicit formula for calculating the bed friction coefficient of the smooth and rough turbulent boundary layer under the action of wave is established. Furthermore, Fluid friction coefficient explicit formula, the formula has no need to iterative, no need to determine the flow, easy to use features.