摘要
基于RNG κ-ε湍流模型与动网格技术，针对钻井隔水管在海洋环境中的实际雷诺数范围，考虑辅助管线的作用对管柱涡激振动进行数值模拟，研究带辅助管线的深水钻井隔水管涡激振动响应特性，并与单个圆柱的响应结果进行对比。研究发现辅助管线使隔水管最大振幅对应的约化速度后移，减小了隔水管在流速较小的海况下发生涡激破坏的可能性，辅助管线与主管之间的相互作用使各管线升力系数出现多频响应，降低了主管的升力系数幅值，考虑海流方向的多变性，辅助管线对钻井隔水管涡激振动具有一定抑制作用，所得结论验证了深水钻井隔水管系统现场作业时上部裸单根配置应用的合理性。
According to prototypal Reynolds numbers of riser in deepwater, two-dimension numerical simulation of VIV of the drilling riser considering auxiliary lines was carried out based on RNG κ-ε turbulence model and dynamic mesh technique. The VIV response characteristics of the deepwater drilling riser with auxiliary lines were studied and compared with response results of the single cylinder. The reduced velocity corresponding to maximum amplitude of the riser vibration increases reduced Oy auxiliary lines, wmtat reduces the probability of the VIV damage in low current conditions. The interaction between the riser pipe and auxiliary lines causes multifrequency response of lift coefficient and reduces lift coefficient amplitude of the riser pipe. In view of variable directions of ocean currents, auxiliary lines play VIV suppression effects on the drilling riser. The conclusion shows that bare joints configuration on the upper part of the deepwater drilling riser is reasonable in field operations.
出处
《中国造船》
EI
CSCD
北大核心
2011年第A02期56-63,共8页
Shipbuilding of China
基金
国家高技术研究发展计划（863）课题（2008AA09A106）
国家科技重大专项课题“深水钻完井工程技术”（2011ZX05026-001）
