中文说明： 根据管道与流体的线性耦合机理，以输液管道耦合振动方程中的流体运动方程、流体连续性方程、管柱运动方程、管柱本构方程为基础，结合接触边界的相容条件实现运动耦合，推导出考虑气体瞬变流动的油管柱流固耦合振动模型，编制相应程序。
English Description：
According to the linear coupling mechanism of pipeline and fluid, based on the fluid motion equation, fluid continuity equation, string motion equation and string constitutive equation in the coupling vibration equation of infusion pipeline, combined with the compatibility condition of contact boundary, the fluid structure coupling vibration model of tubing string considering gas transient flow is deduced, and the corresponding program is compiled.