Damping of Water Waves over Porous Bed
Damping of Water Waves over Porous Bed
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DOI：
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发表时间：
1973-12
影响因子：
2.4
通讯作者：
P. Liu
中科院分区：
文献类型：
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作者：
P. Liu
基于线性化的Navier-Stokes方程和Darcy方程，重新研究了小振幅表面波在透水床面上的粘性阻尼。采用边界层近似求解速度场和压力场。在要求每个周期的净耗散必须与波能的缓慢衰减相平衡的情况下，求出了阻尼率。对前人工作的不足之处进行了分析和改进。理论与实验结果吻合较好。
Based on linearized Navier-Stokes equations and Darcy’s equations, the viscous damping of small amplitude surface waves over a permeable bed is reexamined. Boundary layer approximation is employed in order to solve the velocity field and pressure field. Demanding that the net dissipation per period must be balanced by the slow decay of wave energy, the damping rate is found. The shortcomings of previous works are examined and are improved. Theory agrees fairly well with the experimental results.