The hydrodynamic forces on a circular cylinder in proximity to a wall with intermittent contact in steady current

Tong, Feifei; Cheng, Liang; An, Hongwei; Griffiths, Terry

doi:10.1016/j.oceaneng.2017.09.061

Cited by 13 publications

(2 citation statements)

References 35 publications

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“…The effect of acceleration on hydrodynamic forces was calculated at all bodies. The hydrodynamics forces of a circular cylinder close to a wall were considered by Tong et al [28]. They used the large eddy simulations (LES) method for the simulation of flow over a 3-D circular cylinder near a wall.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation on the Collision between a Solitary Wave and a Moving Cylinder

Eren

Malazi

Temir

2020

Water

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A 2-D numerical wave tank (NWT) was applied for solving the interaction between a solitary wave and a moving circular cylinder. The cylinder was placed at various positions from the tank bed floor. The cylinder can move at a constant horizontal velocity towards the solitary wave. The collision between a solitary wave and a moving cylinder is investigated at various conditions. A total of fifteen cases were studied. Ten different numerical simulations were used, including five submergence depths and two different moving velocities. The other five different numerical simulations were studied when the cylinder was unmoved in the NWT for comparing wave-structure interaction results between the moving and unmoved cylinders. The numerical results were obtained by calculating Reynolds-Averaged Navier-Stokes (RANS) equations and the volume of fluid (VOF) equations. Two different codes (User-Define-Function-UDF) were used for the generation of a solitary wave by moving a wave paddle and traveling cylinder in the NWT. The dynamic mesh method was applied for recreating mesh. First, the ability of CFD codes to generate a solitary wave by using wave paddle movement and the hydrodynamic forces of a moving cylinder were validated by numerical results. Further, the free-surface elevation and hydrodynamic forces were considered at various conditions. The numerical results show that moving cylinder velocity and the space between the cylinder and the tank bed floor have significant effects on surface displacement and hydrodynamic forces.

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Section: Introductionmentioning

confidence: 99%

Numerical Investigation on the Collision between a Solitary Wave and a Moving Cylinder

Eren

Malazi

Temir

2020

Water

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“…Much research has been carried out with regards to protecting submarine pipelines from devastating extreme surge and wave damage during their service periods. Tong et al [2] presented a three-dimensional Large Eddy Simulation (LES) study on the hydrodynamics of a submarine pipeline located close to a wall impacted by current. Results showed that the drag coefficient on spanning sections of the pipeline is generally smaller than that of non-spanning sections, and due to the pressure gradient around the submarine pipeline, vortices shedding can be generated.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Hydrodynamic Characteristics of Submarine Pipelines under the Impact of Real-World Tsunami-Like Waves

Zhao

et al. 2019

Water

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Submarine pipelines have been extensively used for marine oil and gas extraction due to their high efficiency, safety, and low price. However, submarine pipelines are vulnerable to extreme waves (i.e., tsunami waves). Previous research has often used solitary waves as a basis for studying the impacts of tsunami waves on submarine pipelines, although the hydrodynamic characteristics and wave properties drastically differ from those of real-world tsunami waves. This paper numerically investigates the hydrodynamic characteristics of tsunami waves interacting with submarine pipelines, but instead uses an improved wave model to generate a tsunami-like wave that more closely resembles those encountered in the real-world. The tsunami-like wave generated based on a real-world tsunami wave profile recorded during a 2011 tsunami in Japan has been applied. Given the same wave height, simulation results show that peak hydrodynamic forces of the tsunami-like wave are greater than those of the solitary wave. Meanwhile, the duration of the acting force under the tsunami-like wave is much longer than that of the solitary wave. These findings underline the basic reasons for the destructive power of tsunamis. It is also noted that the hydrodynamic forces of the pipeline under the tsunami-like wave increase with wave height, but will decrease as water depth increases. In addition to the single pipeline, the complicated hydrodynamic characteristics of pipelines in tandem arrangement have been also numerically studied. It is believed that the findings drawn from this paper can enhance our understanding of the induced forces on submarine pipelines under extreme tsunami waves.

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Hydrodynamics for Subsea Systems

Tong

Griffiths

2022

Encyclopedia of Ocean Engineering

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The hydrodynamic forces on a circular cylinder in proximity to a wall with intermittent contact in steady current

Cited by 13 publications

References 35 publications

Numerical Investigation on the Collision between a Solitary Wave and a Moving Cylinder

Numerical Investigation on the Collision between a Solitary Wave and a Moving Cylinder

Numerical Study on the Hydrodynamic Characteristics of Submarine Pipelines under the Impact of Real-World Tsunami-Like Waves

Hydrodynamics for Subsea Systems

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