Interference Between a Circular Cylinder and a Plane Wall Under Waves

Jarno, Armelle; Sakout, Anas; Lambert, Eloi

doi:10.1006/jfls.1995.1011

Cited by 15 publications

(5 citation statements)

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“…For deeper scours, the phase-lag decreases at a progressively lower rate. This is in line with the experimental results of Jarno-Druaux et al (1995) for the small gap between the pipe surface and solid bed, where they argued that the restricted flow through the gap is a kind of the low energy boundary layer flow. Figure 13 also shows that the gap flow becomes slightly weaker for scour depths larger than S/D=0.18.…”

Section: Flow Dynamics Around the Pipesupporting

confidence: 89%

“…If a circular cylinder is placed near a plane bed with a small gap, high-speed jet flow prevails in the gap. Jarno-Druaux et al (1995) measured the flow velocity around a near-wall pipe under wave motion in a wave flume. These experiments were carried with a pipe diameter of 0.02 m and for two different gap to diameter ratios (e/D) of 0.09 and 0.5.…”

Section: Methodsmentioning

confidence: 99%

“…At the early stage of scouring, when the scour depth is rather small, the phase-lag between the free surface velocity and the gap flow velocity is highest. This may be due to the strong influence of the oscillatory boundary layer on the gap flow (Jarno-Druaux et al 1995). At the early stages, the phase-lag quickly decreases with increasing scour depth.…”

Section: Flow Dynamics Around the Pipementioning

confidence: 99%

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Two-Phase Simulation of Wave-Induced Tunnel Scour beneath Marine Pipelines

et al. 2012

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An Eulerian two-phase flow model was presented and employed to investigate waveinduced tunnel scour beneath a marine pipelines. The model is based on the Euler-Euler coupled governing equations for the fluid and sediment phases, i.e. time-averaged continuity and momentum equations were solved for both phases with a modified k-ε turbulence closure for the fluid phase. Fluid-particle, particle-particle and fluid-structure interactions were implemented in the simulation. The model accounts for the interphase momentum exchange by considering the drag, lift and added mass forces. The flow model was validated against an oscillatory flow around an isolated cylinder and a cylinder close to a rigid wall. The two-phase model was also validated against an

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Section: Flow Dynamics Around the Pipesupporting

confidence: 89%

Section: Methodsmentioning

confidence: 99%

Section: Flow Dynamics Around the Pipementioning

confidence: 99%

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Two-Phase Simulation of Wave-Induced Tunnel Scour beneath Marine Pipelines

et al. 2012

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“…Also computed were the wave force coefficients and velocity fields and these were later verified with results reported [3]. Whereas the other studies dealt with understanding vortex characteristics exerted by cross flows around a horizontal circular cylinder [2].…”

Section: Theories On Fluidestructure Interactionsmentioning

confidence: 98%

An insight in spatial corrosion prediction

Mustaffa

Gelder

Hashim

2012

International Journal of Pressure Vessels and Piping

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“…1), force calculations are based on coefficients developed for pipes without these weights. Besides, these coefficients are obtained by means of 2D experimental models [1] at reduced scale and 2D numerical models [2,3,4], i.e., with incident wave perpendicular to the pipe. In 2013, experimental tests were performed at the Shallow Water Basin of Danish Hydraulics Institute (DHI) to analyze forces on submarine outfalls composed by circular pipes and weights.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Forces on a Submarine Outfall by a RANS-VoF Numerical Wave Tank

Didier¹,

Neves²,

Teixeira

2019

DDF

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Knowledge of forces due to the action of waves on submarine outfalls composed by a pipe and stabilizing concrete weights, considering the wave propagation direction to the outfalls, is essential to their design. 3D numerical models based on RANS-VoF (Reynolds-Average-Navier-Stokes Volume-of-Fluid) are able to estimate forces on the pipe and weights. The present study aims to simulate a submarine outfall with stabilizing concrete weights at 1:15 scale which was previously tested in the 3D Shallow Water Basin at the Danish Hydraulics Institute (DHI) to analyse the influence of the direction of the incident wave and the distance from the pipe to the bottom on the outfall forces. In this study, numerical results are compared with experimental ones for waves with four different amplitudes and with wave incidence perpendicular to the outfall. The use of k-ω SST turbulence model led to good agreement between numerical drag and lift forces and experimental ones, with a mean difference of 8.9 and 7.6%, respectively.

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Interference Between a Circular Cylinder and a Plane Wall Under Waves

Cited by 15 publications

References 0 publications

Two-Phase Simulation of Wave-Induced Tunnel Scour beneath Marine Pipelines

Two-Phase Simulation of Wave-Induced Tunnel Scour beneath Marine Pipelines

An insight in spatial corrosion prediction

Analysis of Forces on a Submarine Outfall by a RANS-VoF Numerical Wave Tank

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