Hydrodynamic Forces of Subsea Small-Diameter Pipeline in a Deep/Wide Trench

Research output: Chapter in Book/Conference paperConference paperpeer-review

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 languageEnglish
Title of host publicationProceedings of the ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering OMAE2023
Place of PublicationMelbourne
PublisherASME International
Volume3
ISBN (Electronic)9780791886854
ISBN (Print)978-0-7918-8685-4
DOIs
Publication statusPublished - 11 Jun 2023
Event42nd International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2023) - Melbourne, Australia
Duration: 11 Jun 202316 Jun 2023
https://event.asme.org/OMAE

Publication series

NameProceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
Volume3

Conference

Conference42nd International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2023)
Country/TerritoryAustralia
CityMelbourne
Period11/06/2316/06/23
Internet address

Fingerprint

Dive into the research topics of 'Hydrodynamic Forces of Subsea Small-Diameter Pipeline in a Deep/Wide Trench'. Together they form a unique fingerprint.

Cite this