Abstract In this paper, we present measurements of force distribution on a vertical, circular cylinder exposed to shoaling regular waves. The cylinder was divided into four individual sections on which the wave loads were measured. Furthermore, we measured the wave kinematics with Particle Image Velocimetry (PIV) and with Laser Doppler Velocimetry (LDV) in a few reference cases. The force distribution was measured for twenty regular wave conditions and in all the cases the maximum force did not occur simultaneously on the individual sections of the cylinder. A decomposition of the total force in force harmonics showed the same tendencies for the total force as presented in literature. A decomposition of the force on individual cylindrical sections showed that the section at the surface had a significantly higher second force harmonic compared to the sections closer to the bed. Furthermore, we studied the local force coefficients on the individual sections on the cylinder. The inertia coefficient exhibited the same trend for all the individual sections. Estimated force coefficients from measured wave kinematics corresponded well with force coefficients in the literature.

中文翻译：

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垂直圆柱体波浪运动学及波浪载荷分布试验研究

摘要 在本文中，我们展示了暴露于浅滩规则波的垂直圆柱体上力分布的测量结果。圆柱体被分成四个单独的部分，在这些部分上测量波浪载荷。此外，我们在一些参考案例中使用粒子图像测速仪 (PIV) 和激光多普勒测速仪 (LDV) 测量了波浪运动学。在 20 个规则波条件下测量力分布，在所有情况下，最大力不会同时出现在圆柱体的各个部分上。力谐波中总力的分解显示出与文献中呈现的总力相同的趋势。单个圆柱截面上的力的分解表明，与靠近床的截面相比，表面截面具有明显更高的二次力谐波。此外，我们研究了圆柱体各个部分的局部力系数。惯性系数对于所有单独的部分都表现出相同的趋势。从测量的波浪运动学估计的力系数与文献中的力系数很好地对应。