To calculate distribution of sediment concentration in vertical under wave and current, a model of silt diffusion coefficient distribution in vertical is set up.
为了计算波流共同作用下含沙量沿垂线的分布，建立了沿垂线分布的泥沙扩散系数模型。
It's shown from measured data that the distribution in vertical of sediment diffusion coefficient can be obtained correctly by the model.
实测资料表明该模型可以比较准确地直接计算泥沙扩散系数沿垂线的分布。
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