Effect of bed vicinity on vortex shedding and force coefficients of fluid flow on an offshore pipeline

The effect of rigid bed proximity on flow parameters and hydrodynamic loads in offshore pipelines exposed to turbulent flow is investigated numerically. The Galerkin finite volume method is employed to solve the unsteady incompressible 2D Navier–Stokes equations. The large eddy simulation turbulence...

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Main Authors: Namazi-saleh, F., Kurian, V.J., Mustaffa, Z., Tahan, M., Kim, D.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.19589 /
Published: Harbin Engineering University 2017
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85010782706&doi=10.1007%2fs11804-017-1393-y&partnerID=40&md5=5c9d3317d82e6fd4a8a8288bc3fc973a
http://eprints.utp.edu.my/19589/
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spelling utp-eprints.195892018-04-20T07:11:55Z Effect of bed vicinity on vortex shedding and force coefficients of fluid flow on an offshore pipeline Namazi-saleh, F. Kurian, V.J. Mustaffa, Z. Tahan, M. Kim, D. The effect of rigid bed proximity on flow parameters and hydrodynamic loads in offshore pipelines exposed to turbulent flow is investigated numerically. The Galerkin finite volume method is employed to solve the unsteady incompressible 2D Navier–Stokes equations. The large eddy simulation turbulence model is solved using the artificial compressibility method and dual time-stepping approach. The proposed algorithm is developed for a wide range of turbulent flows with Reynolds numbers of 9500 to 1.5×104. Evaluation of the developed numerical model shows that the proposed technique is capable of properly predicting hydrodynamic forces and simulating the flow pattern. The obtained results show that the lift and drag coefficients are strongly affected by the gap ratio. The mean drag coefficient slightly increases as the gap ratio increases, although the mean lift coefficient rapidly decreases. The vortex shedding suppression happen at the gap ratio of less than 0.2. © 2017, Harbin Engineering University and Springer-Verlag Berlin Heidelberg. Harbin Engineering University 2017 Article PeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85010782706&doi=10.1007%2fs11804-017-1393-y&partnerID=40&md5=5c9d3317d82e6fd4a8a8288bc3fc973a Namazi-saleh, F. and Kurian, V.J. and Mustaffa, Z. and Tahan, M. and Kim, D. (2017) Effect of bed vicinity on vortex shedding and force coefficients of fluid flow on an offshore pipeline. Journal of Marine Science and Application, 16 (1). pp. 81-86. http://eprints.utp.edu.my/19589/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description The effect of rigid bed proximity on flow parameters and hydrodynamic loads in offshore pipelines exposed to turbulent flow is investigated numerically. The Galerkin finite volume method is employed to solve the unsteady incompressible 2D Navier–Stokes equations. The large eddy simulation turbulence model is solved using the artificial compressibility method and dual time-stepping approach. The proposed algorithm is developed for a wide range of turbulent flows with Reynolds numbers of 9500 to 1.5×104. Evaluation of the developed numerical model shows that the proposed technique is capable of properly predicting hydrodynamic forces and simulating the flow pattern. The obtained results show that the lift and drag coefficients are strongly affected by the gap ratio. The mean drag coefficient slightly increases as the gap ratio increases, although the mean lift coefficient rapidly decreases. The vortex shedding suppression happen at the gap ratio of less than 0.2. © 2017, Harbin Engineering University and Springer-Verlag Berlin Heidelberg.
format Article
author Namazi-saleh, F.
Kurian, V.J.
Mustaffa, Z.
Tahan, M.
Kim, D.
spellingShingle Namazi-saleh, F.
Kurian, V.J.
Mustaffa, Z.
Tahan, M.
Kim, D.
Effect of bed vicinity on vortex shedding and force coefficients of fluid flow on an offshore pipeline
author_sort Namazi-saleh, F.
title Effect of bed vicinity on vortex shedding and force coefficients of fluid flow on an offshore pipeline
title_short Effect of bed vicinity on vortex shedding and force coefficients of fluid flow on an offshore pipeline
title_full Effect of bed vicinity on vortex shedding and force coefficients of fluid flow on an offshore pipeline
title_fullStr Effect of bed vicinity on vortex shedding and force coefficients of fluid flow on an offshore pipeline
title_full_unstemmed Effect of bed vicinity on vortex shedding and force coefficients of fluid flow on an offshore pipeline
title_sort effect of bed vicinity on vortex shedding and force coefficients of fluid flow on an offshore pipeline
publisher Harbin Engineering University
publishDate 2017
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85010782706&doi=10.1007%2fs11804-017-1393-y&partnerID=40&md5=5c9d3317d82e6fd4a8a8288bc3fc973a
http://eprints.utp.edu.my/19589/
_version_ 1741196231164559360
score 11.62408

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