均匀来流下尾翼型抑振装置效果试验研究  

Experimental study on turbulence suppression of spoiler suppression device in a uniform current

作　　者：李朋[1] 郭海燕[2] 王飞[1] 张永波 

机构地区：[1]山东科技大学土木工程与建筑学院,山东青岛266590 [2]中国海洋大学工程学院,山东青岛266100 [3]青岛国家海洋科学研究中心,山东青岛266071

出　　处：《海洋工程》2017年第2期89-97,共9页The Ocean Engineering

基　　金：国家自然科学基金资助项目(51279187);山东省优秀中青年科学家科研奖励基金资助项目(BS2015HZ017);山东省土木工程防灾减灾重点实验室开放课题基金资助项目(CDPM2013ZR01);山东省高等学校科技计划资助项目(J16LH04);青岛市博士后研究人员应用研究资助项目(01020120406)

摘　　要：基于控制尾流,阻止立管尾流漩涡脱落转换路径的涡激振动抑制机理,设计三角形尾翼、片状尾翼及交错尾翼等三种抑振装置。三种抑振装置分别安装于立管模型表面,立管模型采用外径为18 mm的透明有机玻璃管。通过在均匀流场中进行安装有该抑振装置的立管模型涡激振动试验,研究三种抑振装置对立管涡激振动的抑制效率,并通过与配重裸管的涡激振动数据对比,分析抑振装置对立管动力响应的影响规律。研究结果表明,三种抑振装置均取得了明显的抑振效果,与配重裸管相比,安装片状尾翼及交错尾翼的立管模型抑制效率可达90%以上,安装三角形尾翼后立管模型振动频率略有减小,而安装片状尾翼及交错尾翼的立管模型没有明显的主导频率。Based on the VIV suppression mechanism of wake control and prevent switching path of vortex shedding, the suppression devices of triangular spoiler, staggered spoiler and sheet spoiler were designed. These suppression devices were stick on the surface of the risers. Model materials were made of lucid plexiglass pipe with external diameters of 18 mm. In order to verify the effect of these suppression devices for VIV of the riser, an experiment was carried out in a wind-wave-current flume. According to the comparison with the data of VIV of the bare riser, the effect of suppression devices for dynamic response of the riser was analyzed. The results show that these three suppression devices have obvious suppressing efficiency for VIV of the riser. Compared with the bare riser, the suppressing efficiency of riser model with staggered spoiler and sheet spoiler gets up to 90%. The vibration frequency of riser model with triangular spoiler has a slight decrease and the riser model with staggered spoiler and sheet spoiler does not appear dominant frequency.

关 键 词：深水立管 涡激振动 尾翼 抑制效率 主导频率 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]