Analysis of Fluid–Structure Coupling Vibration Mechanism for Subsea Tree Pipeline Combined with Fluent and Ansys Workbench

Abstract

In the process of oil exploitation, subseatrees sometimes vibrate. In this paper, fluid–structure coupling software was used to study the causes of subsea tree vibration. First, the complex subsea tree model wassimplified, and ageometric grid model wasestablished for software calculation. Then, under the given two working conditions, the software Fluent wasused to analyze the pressure and velocity distribution of the subsea tree pipeline’s flow field. It was found that the pressure of the flow field changed greatly at the variable diameter and right-angles. Using Ansys Workbench software, flow-structure coupling calculations and modal analysis of the subsea tree werecarried out. The results showed that the vibration of the long straight pipeline section wassevere. Finally, the paper puts forward the measures to reduce the vibration of subsea tree pipelines and provides construction advice for the safe production of subsea trees.

Analysis of Fluid-Structure Coupling Vibration Characteristics of Pipeline Transporting Bubbly Fluid Medium: With Application to Luxury Passenger Ship Life Area Pipeline

“…Furthermore, for the two-way fuid-structure coupling method used in this paper, the deformation of the structure was very small and the efect on the fow feld distribution in the pipeline was almost negligible according to the literature [4]. Te aim of this paper was to investigate the structural response of the pipe wall, so it was necessary to apply the two-way fuid-structure coupling method to solve the response of the pipe wall under the internal fuid drive.…”

“…For the marine engineering industry, the pipeline system plays the role of connecting various key equipment, which is directly related to the functional integrity of the delivered products. However, in the actual use of equipment, abnormal vibrations often occur due to the interaction between the internal fuid of the pipeline and the external wall [4][5][6]. Especially for high-value-added passenger ships represented by luxury passenger ships, due to the complexity of their system functions, the layout density of pipelines is much higher than that of conventional marine products, the load situation is more complex, and abnormal vibrations are more likely to occur.…”

Numerical Simulation of Vapor-Liquid Two-Phase Saturated Steam Fluent Flow and Atomizing Jet Cleaning

“…Based on the large-scale general finite element analysis software ANSYS, which integrates the analysis of structure, fluid, electromagnetic field, sound field, and coupling field, the flow field of steam is analyzed. Because the flow field of steam is very complex, we only studied the flow field of single nozzle and determined the optimal nozzle shape according to the analysis of flow field [6]. en, the influence of nozzle size on the flow field is studied to determine the optimal distance of saturated steam cleaning.…”

Evaluation the possibility of vortex-induced resonance for a multistage pressure reducing valve

“…In this paper, multiphysics coupled modal analysis (wet mode) is applied. The fluid pressure is the external excitation force, and the temperature is the internal excitation force, so the modal frequency of the structure is more accurate [19][20][21].…”