浮式平台立柱截面倒角半径对流力的影响

Study on the Current Force on the Columns with Different Fillet Radii of a Floating Platform

浮式平台是深海油气资源开发的重要装备。在浮式平台作业过程中,流力对平台的定位有直接影响,是平台设计时需要考虑的重要因素。当平台设计方案确定后,立柱的主尺度将不能改变,其流力将取决于截面倒角。采用FLUENT软件对不同截面倒角立柱的流力进行了计算。结果表明,立柱倒角对拖航阻力有明显影响,当立柱截面倒角大于2m时,流力可减少50%以上。研究结果可为浮式平台船型设计提供参考。

Floating platform plays an important role in the development of deepwater oil resources. The current force acting on the floating platform is usually considered to be a critical factor for platform design. Once the design plan is finalized, the principal dimension of the column is fixed, and the current force will be mainly affected by the cross sections. The FLUENT software is used here to compute the force of the columns with cross sections of differ- ent fillet radii in a uniform viscous flow. According to the computation, the current force of the column with a fillet radius more than 2 m will be reduced by more than 50 %. The research results may provide good reference to the de- sign of a new platform.