基于物模试验的平板与弧板式防波堤水动力特性对比

为探求一种消浪效果优良且受力较小的新型结构,通过物理模型试验,对比单平板式与单弧板式防波堤的水动力特性,分析不同波浪参数情况下,透射系数、反射系数、压力以及结构物周围流场的变化关系。结果表明,结构物出水状态时,弧板式防波堤对波浪的透射系数明显小于平板式防波堤,入水状态时则相反,静水面处两者相当;结构物出水状态时,弧板式防波堤对波浪的反射系数略大于平板式防波堤,而在静水面及入水状态时,平板式防波堤对波浪的反射系数明显大于弧板式防波堤;两种结构上表面不同测点处的压力差别较大,而下表面的差别不显著。

Comparison of hydrodynamic characteristics between single board and single arc board breakwaters based on physical model test

In order to explore a new kind structure with excellent wave effect and small force,we compare the hydrodynamic characteristics between single board and single arc board breakwaters,and analyze the relationship between the transmission coefficient and the reflection coefficient,pressure and the flow field around the structure under the different wave parameters situation.The results show that the transmission coefficient of the wave of single arc board breakwater is obviously smaller than single board breakwater when the structure is in the condition of water emergence,but it is opposite when the structure is in the condition of water below,at static water surface the two are equivalent.The reflection coefficient of the wave of the single arc board breakwater is slightly larger than that of single board breakwater in the condition of water emergence.However,the reflection coefficient of the wave of the single board breakwater is obviously larger than that of the single arc board breakwater in the condition of static water surface and water below.The pressure differences at different measuring points on the upper surface of the two structures are large,while the difference on the lower surface is relatively insignificant.