附属管对钻井隔水管涡激振动流动控制的研究  

The flow control of vortex-induced vibration for drilling riser by affiliated pipelines

作　　者：赵卓茂[1] 王嘉松[1] 谷斐[2] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240 [2]上海交通大学动力机械与工程教育部重点实验室,上海200240

出　　处：《水动力学研究与进展（A辑）》2012年第4期401-408,共8页Chinese Journal of Hydrodynamics

基　　金：国家高技术研究发展计划(863计划)项目(2008AA09Z310);国家自然科学基金项目(51079084);高等学校博士学科点专项科研基金课题(20110073110006)~~

摘　　要：抑制钻井隔水管的涡激振动是海洋油气开发的一个重要课题。附属管线会改变隔水管附近的流场进而抑制隔水管的涡激振动。采用SST湍流模型数值模拟和风洞实验研究了亚临界流动区域的隔水管关键动力学因素。对于附属管中心距隔水管表面为0.2倍隔水管直径(D)的情况,研究结果表明:计算结果和实验结果较为吻合;不同布置方式和尺寸的附属管起到的抑制效果明显不同;当附属管按照4×0.1D×0o均匀排布时,抑制效果较好且管数较少,时均阻力系数和脉动升力系数均可以减少60%以上;考虑到实际工程应用中海水来流方向的易变性,发现8×0.1D的附属管总体抑制效果最好,减阻和减升分别能达到30%和70%以上。The suppression of vortex-induced vibration （VIV） for drilling riser is an important issue in the field of offshore oil and gas exploitation. Affiliated pipelines will change the flow field around the riser and thus suppress the phenomenon of VIV. The numerical simulation with the shear stress transport （SST） turbulence model and the wind tunnel experiment for the key dynamic factors of riser in the sub-critical flow region have been investigated. When the distance between the center of affiliated risers and the surface of the riser is 0.2 times the diameter of the riser （D）, it is shown that the simulation results agree well with experiment data; different layouts and size of affiliated pipelines can produce markedly different effect; when diameter （d） of affiliated pipelines is 0.1D and inflow angle （a） is 0 degree, the effect of the four affiliated pipelines is better and the number of affiliated pipelines is less, both the time averaged drag and the fluctuating lift coefficient can be reduced more than 60 percent. Considering the variability of the flow direction in practical engineering application, we found the result that the situation of d -- 0.1D and N = 8 is overall best. The time averaged drag and the fluctuating lift coefficient can be reduced up to 30 and 70 percent.

关 键 词：钻井隔水管 附属管 涡激振动 亚临界流动 数值模拟 

分 类 号：O357.1[理学—流体力学]