Research Papers: Ocean Engineering

Three-Dimensional Fluid-Structure-Sediment Interaction Modeling With Application to Local Scouring Around a Movable Cylinder

[+] Author and Article Information
Tomoaki Nakamura

Designated Associate Professor
Institute for Advanced Research,
Nagoya University,
Furo-cho, Chikusa-ku,
Nagoya 464-8601, Japan
e-mail: tnakamura@nagoya-u.jp

Solomon C. Yim

Fellow ASME
School of Civil and Construction Engineering,
Oregon State University,
220 Owen Hall Corvallis, OR 97331
e-mail: solomon.yim@oregonstate.edu

Norimi Mizutani

Department of Civil Engineering,
Nagoya University,
Furo-cho, Chikusa-ku,
Nagoya 464-8603, Japan
e-mail: mizutani@civil.nagoya-u.ac.jp

Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING. Manuscript received September 10, 2011; final manuscript received December 5, 2012; published online May 24, 2013. Assoc. Editor: Dong S. Jeng.

J. Offshore Mech. Arct. Eng 135(3), 031105 (May 24, 2013) (9 pages) Paper No: OMAE-11-1078; doi: 10.1115/1.4023797 History: Received September 10, 2011; Revised December 05, 2012

Complex multidisciplinary physical fields formed by the dynamic interaction between fluid flows, structure motion, and seabed profile evolution are natural in a marine environment. Modeling and analysis of such fluid-structure-sediment interactions are essential for predicting and analyzing the nonlinear behavior of movable structures and their surrounding sediments under wave action. However, no analytical and numerical tools which consider the detailed physics of the entire coupled fluid-structure-sediment system are currently available. In this study, a three-dimensional coupled fluid-structure-sediment interaction model is developed to provide an overarching computational framework for simulating the dynamic behavior of multidisciplinary physical systems. The model consists of an extended Navier-Stokes solver that computes incompressible viscous multiphase flow, a volume-of-fluid module that tracks air-water interface motion, an immersed boundary module that tracks structure motion, and a sediment transport module that tracks suspended sediment motion and seabed profile evolution. For validation, the model is applied to hydraulic experiments on local scouring around a movable short cylinder supported at the base. It is found that the model predicts scour patterns around the cylinder reasonably well, consistent with experimental results measured in the hydraulic experiments. In addition, the computational applicability of the model is demonstrated to predict and analyze a general complex fluid-structure-sediment interaction phenomenon in the marine environment.

Copyright © 2013 by ASME
Your Session has timed out. Please sign back in to continue.



Grahic Jump Location
Fig. 1

Typical computational domain

Grahic Jump Location
Fig. 2

Artificial damping zone

Grahic Jump Location
Fig. 3

Coupling procedure

Grahic Jump Location
Fig. 4

Computational domain for local scouring around a movable short cylinder

Grahic Jump Location
Fig. 5

Final scour depth zsf after 50 wave periods: (a) H = 0.05 m, T = 1.5 s, d50 = 0.20 mm, and (b) H = 0.03 m, T = 3.0 s, d50 = 0.12 mm

Grahic Jump Location
Fig. 6

Snapshots of wave deformation around the cylinder [H = 0.05 m, T = 1.5 s, d50 = 0.20 mm, the same case as in Fig. 5(a)]: (a) during run-up, and (b) during drawdown

Grahic Jump Location
Fig. 7

Snapshots of wave deformation and vortex structures (λ2 = –10) around the cylinder for large scour evolution (H = 0.05 m, T = 1.5 s, d50 = 0.10 mm): (a) t/T = 14.0, (b) t/T = 17.0, (c) t/T = 28.0, (d) t/T = 29.0, (e) t/T = 30.0, and (f) t/T = 32.0

Grahic Jump Location
Fig. 8

Position and angle of the cylinder for large scour evolution (H = 0.05 m, T = 1.5 s, d50 = 0.10 mm, the same case as in Fig. 7)

Grahic Jump Location
Fig. 10

Position and angle of the cylinder dropped from above the still water surface (H = 0.05 m, T = 1.5 s, d50 = 0.20 mm, the same case as in Fig. 9)

Grahic Jump Location
Fig. 9

Snapshots of the behavior of the cylinder during the airdrop, impact on the water surface, sinkage, and impact on the seabed surface and the resulting response of the surrounding seabed (H = 0.05 m, T = 1.5 s, d50 = 0.20 mm): (a) t/T = 0.05, (b) t/T = 0.11, (c) t/T = 0.15, (d) t/T = 0.20, (e) t/T = 0.40, and (f) t/T = 10.0




Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In