... ABSTRACT During the deployment of open-frame remotely operated underwater vehicles (ROVs), the influence of waves can produce large-scale movement in the ROVs that may break or damage the umbilical cable. This paper investigates the forced water entry and lifting water entry of ROVs using...

... with symmetric slamming, the prediction of asymmetric slamming load is more challenging due to the influence of ship roll and wave direction. Some studies on the asymmetric slamming problem have been done. Iafrati (2000) directly solved the velocity potential and its derivative in the water entry problem...

... hull profile china government history water entry actual trimaran flow field asia government structural response wet deck initial velocity experimental result accuracy numerical study peak value Proceedings of the Thirty-third (2023) International Ocean and Polar Engineering Conference...

... on the basis of the plate approximation. reservoir simulation impact pressure structural deformation high-speed water entry artificial intelligence solver precice europe government deformation mesh peak impact pressure germany government wedge water entry cfd-fem method time history curve...

... ABSTRACT The hydrodynamic performance of lifeboats is critical for the safety of passengers since several complex fluid-structure interaction phenomena could occur during the water entry phase. This paper, within a fully 3D Smoothed Particle Hydrodynamics (SPH) framework, is dedicated...

... inclination angle lateral load wedge-shaped body different initial speed simulation upstream oil & gas water surface different inclination angle water entry positive peak value wedge initial speed equation vertical load oblique free entry peak value time history torque...

... ABSTRACT In this paper, low-speed water entry of four projectiles with various head types is numerically studied by using an improved multiphase moving particle semi-implicit (MPS) method. The projectiles are composed of a solid circular cylinder with L/D = 4.5 and different head shapes...

... Abstract This paper studies the slamming responses of a wedge structure for the water entry problem. One steel wedge with stiffened panels with a deadrise angle of 45 degrees and a series of free-drop model tests were carried out. An explicit finite element code is applied to simulate...

... Abstract The oblique water entry of a cylinder is investigated experimentally in the present study. The cylinder is driven by a computer-controlled linear motor to ensure the constant impact velocity during the water entry process. To investigate the influence of wave on the impact loads...

... Abstract The famous shallow water impacts event at the Chicxulub in Mexico’s Yucatan Peninsula at the Cretaceous–Tertiary boundary 65 million years ago was considered as an important case for tsunami studies. The water entry of a sphere–like asteroid with different impact angle is simulated...

... Abstract An experimental study of the cavity evolution during the oblique water entry of a slender axisymmetric body in progressive waves is presented. The projectile, with a flat headform, is driven by a computer-controlled linear motor to ensure a constant impact velocity during the oblique...

... Abstract When a ship sails in a hostile sea, it is hard to avoid slamming pressure. In this paper, the slicing theory and MPS method are combined to study the impact pressure during water entry. Firstly, the effectiveness of the in-house solver MPS-SJTU is verified by a water-entry test...

... are considered as three-phase problems. Local Mesh Refinement (LMR) grid is adopted to reduce the computational cost. Benchmark cases of water entry and exit of a circular cylinder, as well as the radiation of a box-type breakwater are used to validate the model. Acceptable agreements are obtained between...

... ABSTRACT The open source CFD library OpenFOAM is used to simulate the process of the crane lifting cargo into the water. In this paper, overset mesh strategy and the overInterDyMFoam solver are used to solve the process of two-dimensional water entry of a wedge. Firstly, the pressure...

... ABSTRACT The problem of water entry of a rigid body with low deadrise angle is numerically simulated by means of computational fluid dynamics. The Reynolds averaged Navier-Stokes equations are employed to simulate the water and the air. The profile of the static water surface would be deformed...

... Aeration Effects on Hydrodynamic Loads of Circular Cylinder s High-speed Water Entry Yao HONG Benlong WANG Hua LIU Department of Engineering Mechanics, Shanghai Jiao Tong University. MOE Key Laboratory of Hydrodynamics, Shanghai Jiao Tong University. Shanghai, China ABSTRACT The water-entry of 2D...

... in their numerical results when this influence was taken into account, capturing accurately negative displacements. There- fore we can expect a general improvement in our results by considering the influence of the gate. Fig. 10 Wedge water entry: computational domain. SI units. WATER ENTRY OF RIGID AND ELASTIC...

... ABSTRACT In this paper, the water entry problem of free-falling twin wedges is studied based on an in-house code, named a Constrained Interpolation Profile (ClP)-based model in Zhejiang University (CIP-ZJU). The model is built on a Cartesian grid system and governed by the incompressible...

..., the approach maintains high order accuracy while suppressing spurious oscillations near discontinuity or sharp gradient regions. Water entry simulations of differently shaped rigid-body including multi-body are presented for immersed moving boundary problems, which are the representatives of the nonlinear...

... solver boundary method water entry cut cell interaction aircraft airplane international society boundary condition upstream oil & gas mathematical model momentum equation boundary instantaneous velocity field navier-stoke solver reservoir simulation two-phase solver...