Based on the flow moment equation, developed the lateral motion equation of a Marine riser by considering the coupling of the fluid and the pipe.
从流体的动量方程出发，考虑流体和管道的耦合，推导出输运流体海洋立管的偏微分运动方程。
2
Theoretical analysis, onboard test and bench test show that this phenomenon is determined by natural blast torque after throw-out of Marine fluid coupling as well as damping torque of shafting.