Hydrodynamic forces on a pipeline with uneven embedment
Hydrodynamic forces on a pipeline with uneven embedment on either side, subject to oscillatory flow, are investigated numerically. Two-dimensional Reynolds-Averaged Navier-Stokes equations with a k-w turbulent model are solved to simulate the flow in the fluid. It is assumed the seepage flow in the...
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ftunivwestsyd:oai:researchdirect.westernsydney.edu.au:uws_14868 2023-05-15T14:23:06+02:00 Hydrodynamic forces on a pipeline with uneven embedment An, Hongwei Cheng, Liang Zhao, Ming (R16667) School of Engineering (Host institution) International Conference on Ocean, Offshore and Arctic Engineering (Event place) 2012 print 9 http://handle.uws.edu.au:8081/1959.7/521626 https://www.asmeconferences.org/OMAE2012/ eng eng USA, ASME Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering: OMAE2012: July 1-6, 2012, Rio de Janeiro, Brazil--9780791844908 pp: 855-864 090599 - Civil Engineering not elsewhere classified 850203 - Oil and Gas Extraction pipelines hydrodynamic loads oscillatory flows Navier-Stokes equations subsea pressure uneven embedment conference paper 2012 ftunivwestsyd 2020-12-05T17:04:34Z Hydrodynamic forces on a pipeline with uneven embedment on either side, subject to oscillatory flow, are investigated numerically. Two-dimensional Reynolds-Averaged Navier-Stokes equations with a k-w turbulent model are solved to simulate the flow in the fluid. It is assumed the seepage flow in the seabed is governed by Darcy’s law and Laplace equation is solved to calculate the pore pressure under the assumption of isotropic and homogenous seabed. The effects of embedment depths and KC numbers on the hydrodynamic force are investigated. The flow structure and pressure distribution around the pipeline are discussed. The inline force and lift exerting on the pipeline are presented in the form of peak values and Fourier coefficients. It is found that flow structures around the pipeline are asymmetric due to the difference of seabed levels on the two sides of the pipeline. The degree of asymmetry increases with the increase of |e1-e2|D. Obvious difference exists between the hydrodynamic forces experienced by the pipeline in two succeeding halves of a period due to the asymmetric flow structure around the pipeline. The peak values of inline force and life reduce as e2|D increase for all values of e1 examined in this study. The maximum error of the inline force and lift predicted by using sixth order Fourier series is about 4%. Conference Object Arctic University of Western Sydney (UWS): Research Direct Laplace ENVELOPE(141.467,141.467,-66.782,-66.782) |
institution |
Open Polar |
collection |
University of Western Sydney (UWS): Research Direct |
op_collection_id |
ftunivwestsyd |
language |
English |
topic |
090599 - Civil Engineering not elsewhere classified 850203 - Oil and Gas Extraction pipelines hydrodynamic loads oscillatory flows Navier-Stokes equations subsea pressure uneven embedment |
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090599 - Civil Engineering not elsewhere classified 850203 - Oil and Gas Extraction pipelines hydrodynamic loads oscillatory flows Navier-Stokes equations subsea pressure uneven embedment An, Hongwei Cheng, Liang Zhao, Ming (R16667) Hydrodynamic forces on a pipeline with uneven embedment |
topic_facet |
090599 - Civil Engineering not elsewhere classified 850203 - Oil and Gas Extraction pipelines hydrodynamic loads oscillatory flows Navier-Stokes equations subsea pressure uneven embedment |
description |
Hydrodynamic forces on a pipeline with uneven embedment on either side, subject to oscillatory flow, are investigated numerically. Two-dimensional Reynolds-Averaged Navier-Stokes equations with a k-w turbulent model are solved to simulate the flow in the fluid. It is assumed the seepage flow in the seabed is governed by Darcy’s law and Laplace equation is solved to calculate the pore pressure under the assumption of isotropic and homogenous seabed. The effects of embedment depths and KC numbers on the hydrodynamic force are investigated. The flow structure and pressure distribution around the pipeline are discussed. The inline force and lift exerting on the pipeline are presented in the form of peak values and Fourier coefficients. It is found that flow structures around the pipeline are asymmetric due to the difference of seabed levels on the two sides of the pipeline. The degree of asymmetry increases with the increase of |e1-e2|D. Obvious difference exists between the hydrodynamic forces experienced by the pipeline in two succeeding halves of a period due to the asymmetric flow structure around the pipeline. The peak values of inline force and life reduce as e2|D increase for all values of e1 examined in this study. The maximum error of the inline force and lift predicted by using sixth order Fourier series is about 4%. |
author2 |
School of Engineering (Host institution) International Conference on Ocean, Offshore and Arctic Engineering (Event place) |
format |
Conference Object |
author |
An, Hongwei Cheng, Liang Zhao, Ming (R16667) |
author_facet |
An, Hongwei Cheng, Liang Zhao, Ming (R16667) |
author_sort |
An, Hongwei |
title |
Hydrodynamic forces on a pipeline with uneven embedment |
title_short |
Hydrodynamic forces on a pipeline with uneven embedment |
title_full |
Hydrodynamic forces on a pipeline with uneven embedment |
title_fullStr |
Hydrodynamic forces on a pipeline with uneven embedment |
title_full_unstemmed |
Hydrodynamic forces on a pipeline with uneven embedment |
title_sort |
hydrodynamic forces on a pipeline with uneven embedment |
publisher |
USA, ASME |
publishDate |
2012 |
url |
http://handle.uws.edu.au:8081/1959.7/521626 https://www.asmeconferences.org/OMAE2012/ |
long_lat |
ENVELOPE(141.467,141.467,-66.782,-66.782) |
geographic |
Laplace |
geographic_facet |
Laplace |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering: OMAE2012: July 1-6, 2012, Rio de Janeiro, Brazil--9780791844908 pp: 855-864 |
_version_ |
1766295591785070592 |