Nonlinear Dynamics Analysis of a Rotating Drill Pipe Model Incorporating the Magnus Effect and Rotary Inertia of the Pipe

This study investigates the nonlinear dynamic motions of the rotating drill pipe due to the Magnus effect. A three-dimensional fully parameterized beam element based on the absolute nodal coordinate formulation (ANCF) is used to account for the rotary inertia of the rotating pipe model. The rotation of the pipe is imposed through a rotation matrix at the top node and transmitted through the twist of the pipe along its length, therefore accounting for the nonlinear coupling of bending and torsional deformations. In addition , three-dimensional components of hydrodynamics forces in relation to the inflow velocity of water, rotational velocity, and orientation of the pipe were computed using ANSYS Fluent . The obtained forces are applied as an external force vector on the pipe model. Through a comparison of simulation results and experimental results, the applicability of the presented model is confirmed.