摘要
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.
To simulate the cylinder buoy time-domain motion in wave energy converter using computa- tional fluid dynamics （CFD） method. Comparing with the foreign results, the accuracy of CFD was verified. Based on this, the heave motion regulars of buoy draft, diameter and bottom shape were got, the influence between bottom shape and energy absorb and dissipation was shown from flow field in the study. It is shown that the same diameter, the larger draft can make the larger heave amplitudeve the same draft, the smaller diameter can make the larger heave amplitudey the same size, the heave performance and capture width ratio of hemispherical bottom cylinder buoy are better than flat bottom buoy.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2015年第12期65-70,共6页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
中央高校基本科研业务费重大资助项目(HEUCFD1414)
关键词
波浪能
浮子
计算流体力学
垂荡
吃水
半球形底
俘获宽度比
wave energy
buoy
computational fluid dynamics （CFD）
heave
draft
hemisphericalbottom
capture width ratio
