波浪作用下粉沙悬沙垂向分布多组分模型研究

A multi-component model for vertical suspended silt distribution under wave action

基于有限长掺混理论及泥沙层化抑制理论,建立波浪作用下粉沙多组分悬沙分布模型,通过水槽实验研究了山东潍坊港粉沙在规则波和不规则波作用下的垂向悬沙分布规律,并利用建立的模型和实验结果进行了比较。研究结果表明:多组分悬沙模型相对中值粒径代表的单组分模型能更好地反映波浪作用下粉沙悬沙垂向分布;对于不规则波,有效波高和谱峰周期作为参数能够获得最优的悬沙分布模拟结果。

Based on the theory of finite-mixing-length theory and sediment stratification effect,A multicomponent suspended sediment concentration distribution model with stratification effect under wave action has been developed.The flume experiment for vertical suspended sediment concentration distribution of the silt sample,collected from beach around Weifang Port in Shandong Province,has also conducted under regular and irregular wave actions.After comparing the simulated and experimental results,it is shown that the multicomponent suspended sediment concentration model can better reflect the actual vertical concentration distribution under wave action compared to the single-component model represented by median particle size,the significant wave height and spectral peak period can be used as parameters to obtain the optimal simulation results of suspended sediment distribution under irregular wave action.