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对波浪能装置中的圆柱形浮子采用计算流体力学(CFD)方法进行时域模拟,通过浮子运动幅值与国外权威数据的对比,验证了CFD方法的准确性.利用该方法研究了浮子吃水、直径和底部形状与浮子运动性能的关系,并从流场的角度分析了底部形状对浮子的能量吸收与耗散的影响.结果表明:直径相同的圆柱,吃水较大圆柱垂荡运动幅值较大;吃水相同的圆柱,直径较小的圆柱运动幅值较大;对于相同尺度的圆柱,半球形底的圆柱比平底圆柱垂荡性能好,俘获宽度比也较高.
The CFD method is applied to simulate the time-domain of the cylindrical float in the wave energy device, and the accuracy of the CFD method is verified by comparing the amplitude of the float motion with that of foreign authoritative data. By using this method, Diameter and shape of the bottom of the float and the movement of the float, and from the perspective of the flow field, the effect of bottom shape on the energy absorption and dissipation of the float is analyzed.The results show that: The cylinder with the same water draft and the smaller diameter had a larger amplitude of motion. For a cylinder of the same scale, the hemispherical bottom cylinder had a better performance than the flat cylinder with a higher capture width ratio.