本文用Hankel积分变换的方法分别给出了,二阶流体和Maxwell流体在环形套管内不定常旋转运动方程的解析解。据此可以分析旋转速度和切应力分布的变化特征,为占井工程设计提供理论依据。

This paper presents analytical solutions to the partial differential equation for unsteady rotatory flow of viscoelastic fluid in annular pipes by using the integral transform method. The results can be used to analyse the behavior of rotatory velocity and shear stress unsteady flow of non-Newtonian fluids in annular pipes and to provide a theoretical base for drilling engineering design.