Seabed shear stress and bedload transport due to asymmetric and skewed waves
Seabed shear stress and bedload transport due to asymmetric and skewed waves
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DOI：
10.1016/j.coastaleng.2007.06.004
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发表时间：
2007-12
影响因子：
4.4
通讯作者：
David Gonzalez-Rodriguez;O. Madsen
中科院分区：
文献类型：
--
作者：
David Gonzalez-Rodriguez;O. Madsen
提出了一种计算不对称波和斜波作用下海床剪应力的简单概念公式。该公式推广了正弦波的情况，并使用一个可变的摩擦因子来描述边界层的物理特性和参数化波形的影响。床层剪切应力的预测与使用具有k -ε湍流闭合的标准边界层模型的数值计算一致。将床层剪切应力公式与Meyer-Peter和m<s:1> ller型公式相结合，用于预测水平或倾斜床层在不对称波和斜波作用下的片流床质输运。预测结果与文献中的振荡水洞测量结果一致。
A simple conceptual formulation to compute seabed shear stress due to asymmetric and skewed waves is presented. This formulation generalizes the sinusoidal wave case and uses a variable friction factor to describe the physics of the boundary layer and to parameterize the effects of wave shape. Predictions of bed shear stresses agree with numerical computations using a standard boundary layer model with a k–ε turbulence closure. The bed shear stress formulation is combined with a Meyer-Peter and Müller-type formula to predict sheet flow bedload transport under asymmetric and skewed waves for a horizontal or sloping bed. The predictions agree with oscillatory water tunnel measurements from the literature.