Numerical simulation of flow-induced forces on subsea structures in a group under uniform and sheared flow.

Annapeh, Henry Francis; Kurushina, Victoria

Abstract

Subsea production systems design requires estimates of hydrodynamic loads related to characteristics of structures and the external flow. The current work investigates flow-induced forces for a group of stationary rigid structures modelled in 2D including one structure with a squared cross-section and three smaller circular cylinders located in proximity of each other. Uniform flow and planar sheared flow conditions are considered in this work, with three different arrangements of smaller structures. Flow characteristics are obtained using CFD method and k-ω SST turbulence model. Simulation results include time histories of hydrodynamic coefficients, FFT data and velocity fields. Results for the planar sheared flow in the cases considered show a reduction of mean drag coefficients, increase of frequencies and amplitudes of the fluctuating drag and lift coefficients compared to values observed for the uniform flow.

Citation

ANNAPEH, H.F. and KURUSHINA, V. 2022. Numerical simulation of flow-induced forces on subsea structures in a group under uniform and sheared flow. In Dimitrovová, Z., Biswas, P., Gonçalves, R. and Silva, T. (eds.) Recent trends in wave mechanics and vibrations: proceedings of the 10th International conference on wave mechanics and vibrations (WMVC 2022), 4-6 July 2022, Lisbon, Portugal. Mechanisms and machine science, 125. Cham: Springer [online], pages 512-522. Available from: https://doi.org/10.1007/978-3-031-15758-5_52

• Conference Name: 10th International conference on wave mechanics and vibrations (WMVC 2022)
• Conference Location: Lisbon, Portugal
• Start Date: Jul 4, 2022
• End Date: Jul 6, 2022
• Acceptance Date: Oct 6, 2022
• Online Publication Date: Oct 6, 2022
• Publication Date: Oct 7, 2022
• Deposit Date: Feb 13, 2024
• Publicly Available Date: Mar 13, 2024
• Publisher: Springer
• Pages: 512-522
• Series Title: Mechanisms and machine science
• Series Number: 125
• Series ISSN: 2211-0984; 2211-0992
• Book Title: Recent trends in wave mechanics and vibrations
• ISBN: 9783031157578; 9783031157608
• DOI: https://doi.org/10.1007/978-3-031-15758-5_52
• Keywords: Marine engineering; Offshore engineering; Fluid mechanics; Flow
• Public URL: https://rgu-repository.worktribe.com/output/2166742