Abstract
Accurate predictions of the hydrodynamic forces on a pipeline or cable in a trench are of both fundamental and practical significance. Existing design guidance (DNV-RP-F109) enables forces to be estimated based on a simplified model of a pipeline in a trapezoidal trench with very limited dependence of hydrodynamic forces on incoming flow and some trench geometry parameters, such as the slope of the trench θ, the trench-width-to-pipeline-diameter ratio W* and the trench-height-to-pipeline-diameter ratio H*. The present study conducts a series of two-dimensional (2-D) and three-dimensional (3-D) direct numerical simulations of steady flow past a pipeline placed at the bottom of a smooth trench over a range of trench configurations (θ = 0°–30°, W* = 3–20 and H* = 1–20). The pipeline Reynolds numbers vary from 500 to 3900 based on incoming steady flow velocity and pipeline diameter, meaning that these results are a preliminary investigation of the problem rather than representing typical pipeline/cable/trench/ flow conditions. This paper explores the dependence of trench configurations on flow characteristics and hydrodynamic forces.
Original language | English |
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Title of host publication | Proceedings of the ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering OMAE2023 |
Place of Publication | Melbourne |
Publisher | ASME International |
Volume | 3 |
ISBN (Electronic) | 9780791886854 |
ISBN (Print) | 978-0-7918-8685-4 |
DOIs | |
Publication status | Published - 11 Jun 2023 |
Event | 42nd International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2023) - Melbourne, Australia Duration: 11 Jun 2023 → 16 Jun 2023 https://event.asme.org/OMAE |
Publication series
Name | Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE |
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Volume | 3 |
Conference
Conference | 42nd International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2023) |
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Country/Territory | Australia |
City | Melbourne |
Period | 11/06/23 → 16/06/23 |
Internet address |