Heave plates are widely used in floating offshore structures to reduce the heave motion by increasing heave damping and heave added mass, and these parameters are sensitive to the amplitude and frequency of heave motion. It is important to obtain the hydrodynamic parameters, namely, damping and added mass of the floater not only at its natural frequency, which can be obtained from free decay tests but also at other frequencies because the floater response is of interest over a wide range of amplitudes and frequencies. Forced oscillation tests in calm water can aid the investigation of these parameters at various motion frequencies and amplitudes. Heave damping and added mass of classic spar with heave plate are investigated in this study using experiments and numerical simulations of forced heave oscillation of a 1:100 scale model in calm water for various frequency-amplitude combinations. The least square method was used to determine the added mass and damping using three damping models, namely, linear, quadratic, and linear-plus-quadratic, and their applicability assessed. The effect of amplitude and frequency of oscillation on the parameters are discussed for various heave plate configurations with the aid of flow visualization from numerical simulations. Added mass effect is examined using flow visualization of the fluid acceleration field. The scale effect on the parameters is also addressed.

升沉板广泛用于浮动海上结构中，以通过增加升沉阻尼和增加升沉质量来降低升沉运动，这些参数对升沉运动的幅度和频率敏感。重要的是获得流体力学参数，即不仅要在自然频率下获得浮子的阻尼和附加质量，这可以从自由衰减测试中获得，而且还可以在其他频率下获得，因为浮子的响应在很宽的频率范围内是令人关注的。振幅和频率。在平静水中进行强制振荡测试可以帮助研究各种运动频率和振幅下的这些参数。本研究利用1的强迫升沉振动的实验和数值模拟研究了升沉板的升沉阻尼和经典翼梁的附加质量。镇静水中的100比例模型，适用于各种频率-振幅组合。使用最小二乘法，使用线性，二次和线性加二次的三种阻尼模型来确定附加质量和阻尼，并评估其适用性。借助于数值模拟的流动可视化，讨论了各种振幅盘形结构的振荡幅度和频率对参数的影响。使用流体加速场的流动可视化检查了附加的质量效应。还解决了比例对参数的影响。借助于数值模拟的流动可视化，讨论了各种振幅盘形结构的振荡幅度和频率对参数的影响。使用流体加速场的流动可视化检查了附加的质量效应。还解决了比例对参数的影响。借助于数值模拟的流动可视化，讨论了各种振幅盘形结构的振荡幅度和频率对参数的影响。使用流体加速场的流动可视化检查了附加的质量效应。还解决了比例对参数的影响。