Water Entry of a Wedge Based on Sph Model with an Improved Boundary Treatment

Gong, Kai; Liu, Hua; Wang, Ben-long

doi:10.1016/s1001-6058(08)60209-7

Cited by 99 publications

(31 citation statements)

References 11 publications

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“…In the early stage of the wedge entry, it has been found that the single-phase SPH model could provide enough accuracy for the falling wedge dynamics and kinematics (Gong et al, 2009). So here we will focus on the later stage of the wedge entry when the air cavity near the wedge is closed, aiming to explore the differences between the single-and two-phase modelling approaches.…”

Section: Model Applications -Wedge Entry Into the Watermentioning

confidence: 99%

“…The artificial viscosity coefficient is  = 0.1, XSPH coefficient  = 0.5, EoS constant B = 700000 and background pressure 1000 pa for both the water and the air phases. Besides, an efficient sponge layer is placed on the lateral solid walls of the water tank to absorb undesirable reflection waves (Gong et al, 2009). Fig.…”

Section: Single-and Two-phase Sph Modelling Of Wedge Entry Of Oger Etmentioning

confidence: 99%

“…The other computational parameters, such as the viscosity coefficient, XSPH coefficient, EoS constant and background pressure etc, are the same as those used in the previous wedge entry simulations. The total simulation time is 0.3 s. In order to save the computational effort, similar absorbing boundaries as mentioned before (Gong et al, 2009) are also implemented to remove the sound disturbances from the tank wall so that the simulation time can be extended. Fig.…”

Section: Two-phase Sph Modelling Of Wedge Entry Based On Laboratory Ementioning

confidence: 99%

“…In the previous works by the same authors (Gong et al, 2009;, we investigated the early stage of the water entry by using a single-phase SPH model and found that there was almost no difference in the simulation results whether a single-phase or a two-phase model was used. One main objective of the present work is to investigate more in-depth hydrodynamics during the entire wedge entry process with the support of our own laboratory experiment.…”

Section: Introductionmentioning

confidence: 98%

See 3 more Smart Citations

Two-phase SPH simulation of fluid–structure interactions

Gong

Shao

Liu

et al. 2016

Journal of Fluids and Structures

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Section: Model Applications -Wedge Entry Into the Watermentioning

confidence: 99%

Section: Single-and Two-phase Sph Modelling Of Wedge Entry Of Oger Etmentioning

confidence: 99%

Section: Two-phase Sph Modelling Of Wedge Entry Based On Laboratory Ementioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Two-phase SPH simulation of fluid–structure interactions

Gong

Shao

Liu

et al. 2016

Journal of Fluids and Structures

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“…They used hundreds of millions of particles to simulate the sphere water entry. Gong et al [20] also studied the hydrodynamics of a two dimensional wedge water entry based on SPH technique. They proposed a non-reflecting boundary condition to reduce the reflection of sound waves.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Wedge Water Entry using Smoothed Particle Hydrodynamics Method

Farsi

Ghadimi

Zamanian

et al. 2013

International Journal of Scientific World

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This article presents a study based on the smoothed particles hydrodynamics method, aiming at a numerical simulation of solid-fluid coupling in a free surface flow. Smoothed Particle Hydrodynamics method (SPH) represents a very interesting alternative method to classical mesh-based methods such as Finite-Volume, Finite-Difference or FiniteElement Methods. The SPH scheme is first described and discussed through its formulations. Two test cases of wedge water entry are presented. To accomplish this, 2D-SPH models in conjunction with turbulence model are implemented and MLS density filter is utilized to remove pressure fluctuations. Pressure distribution, time history of pressure and free surface level are provided. In order to validate the obtained free surface, free surface of dam break problem is simulated and compared with experimental result. Also, the obtained pressure distribution is compared with the analytical result of similarity solution.

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Hydroelastic Impacts of Deformable Wedges

Panciroli

2012

Dynamic Failure of Composite and Sandwich Structures

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This work investigates the slamming phenomenon experienced during the water entry of deformable bodies. Wedges are chosen as reference geometry due to their similarity to a generic hull section. Hull slamming is a phenomenon occurring when a ship re-enters the water after having been partially or completely lifted out the water. There are three more cases commonly defined as slamming in marine applications: bow-flare, wet-deck and green water slamming. These are all special cases of the general topic of water entry of a body. While the analysis of rigid structures entering the water has been extensively studied in the past and there are analytical solutions capable of correctly predicting the hydrodynamic pressure distribution and the overall impact dynamics, the effect of the structural deformation on the structural force is still a challenging problem to be solved. In fact, in case

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Water Entry of a Wedge Based on Sph Model with an Improved Boundary Treatment

Cited by 99 publications

References 11 publications

Two-phase SPH simulation of fluid–structure interactions

Two-phase SPH simulation of fluid–structure interactions

Simulation of Wedge Water Entry using Smoothed Particle Hydrodynamics Method

Hydroelastic Impacts of Deformable Wedges

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