The Floating Liquefied Natural Gas (FLNG) is a new type of floating platform for the exploitation of stranded offshore oil/gas fields. The side by side configuration for the FLNG vessel and the LNG carrier arranged in parallel is one of the possible choices for the LNG offloading. During the offloading operations, the multiple floating bodies would have very complex responses due to their hydrodynamic interactions. In this study, numerical simulations of multiple floating bodies in close proximity in the side by side offloading configuration are carried out with the time domain coupled analysis code SIMO. Hydrodynamic interactions between the floating bodies and the mechanical coupling effects between the floating bodies and their connection systems are included in the coupled analysis model. To clarify the hydrodynamic effects of the two vessels, numerical simulations under the same environmental condition are also conducted without considering the hydrodynamic interactions, for comparison. It is shown that the hydrodynamic interactions play an important role in the low frequency motion responses of the two vessels, but have little effect on the wave frequency motion responses. In addition, the comparison results also show that the hydrodynamic interactions can affect the loads on the connection systems.

中文翻译：

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并排配置的FLNG船与LNG船之间的流体动力相互作用

浮动液化天然气（FLNG）是一种新型的浮动平台，用于开采搁浅的海上油气田。FLNG船和LNG船并排布置的并排配置是LNG卸载的可能选择之一。在卸载过程中，多个浮体由于其水动力相互作用而具有非常复杂的响应。在这项研究中，使用时域耦合分析代码SIMO对并排卸载配置中紧邻的多个浮体进行了数值模拟。浮体之间的水动力相互作用以及浮体与其连接系统之间的机械耦合效应都包含在耦合分析模型中。为了阐明两个容器的水动力效应，为了进行比较，还进行了在相同环境条件下的数值模拟，而没有考虑流体动力相互作用。结果表明，水动力相互作用在两个容器的低频运动响应中起着重要作用，但对波浪频率运动响应的影响很小。此外，比较结果还表明，流体动力相互作用会影响连接系统上的载荷。