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Spar平台主体垂荡-月池流体耦合运动模型试验研究

DOI: 10.3969/j.issn.1006-7043.201312035

Keywords: Spar平台, 垂荡, 月池, 模型试验, 阻尼, 垂荡RAO, 耦合运动

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Abstract:

针对Spar平台主体垂荡-月池流体耦合运动问题,采用模型试验的方法进行了研究.设计了可拆卸的月池底部挡板及垂荡板,通过静水中自由衰减试验及波浪中强迫运动试验,分析了月池流体对平台主体垂荡运动的影响.结果表明:月池流体显著增加了平台垂荡阻尼;当波浪周期接近平台垂荡固有周期时,月池流体对平台主体垂荡有抑制效应,且抑制程度与月池开孔面积有关;对于较大的底部挡板开孔率,平台主体垂荡RAO有2个峰,当波浪周期接近月池流体垂向振动固有周期时,也会激起平台主体较大的垂荡运动.实际中采用半开口月池时,应考虑月池流体对平台主体垂荡运动的影响.

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