Dynamics of a Confined Cantilevered Pipe Concurrently Subjected to Internal and External Axial Flows: A Computational Study

Abstract

Abstract This paper presents the results of several numerical simulations of two flow configurations involving a pipe conveying fluid and simultaneously subject to an external axial flow, using a coupled two-way Fluid-Structure Interaction (FSI) computational approach. The computational model is made up of two parts: a finite volume-based computational fluid dynamics (CFD) code for the fluid domain, and a finite element-based computational solid mechanics code for the structural domain. This approach solves the fluid and structural domains simultaneously, accounting for both the structural deformation caused by fluid pressure and the changes in fluid pressure resulting from structural deformation. To achieve accurate results, the process involves exchanging data between the solid and fluid models. In this technique, the pressure is transferred from CFD to structural analysis, and the deformation is transferred from structural to CFD analysis. This update occurs with each iteration until both solutions converge. Additionally, the simulation results are compared to those obtained from experiments for further validation.