in this research, numerical simulation of a symmetric impact of a 2-d wedge, considering dynamic equations in two-phase flow is taken into account. the two-phase flow around the wedge is solved based on finite volume method and volume of fluid (vof) scheme. the dynamic mesh model is used to simulate dynamic motion of the wedge, thereby the effects of different dynamic meshes in both structured ...

In this paper, the characteristics of impact pressure and force a trimaran section was studied by Computational Fluid Dynamics (CFD). The time domain features slamming or showed strong correlation with penetration depth regardless specific ways water entry. effects velocity acceleration on were analyzed. It found that initial main hull wet-deck predominantly affected entry velocities, whilst ha...

Violent fluid motions, high speed marine vehicles and Computational Fluid Dynamics (CFD) are selected as main topics. Violent fluid motions deal with green water on deck, sloshing and slamming. Slamming involves many physical effects. When analyzing slamming, one must always have the structural reaction in mind. This necessitates that hydroelastic effects are considered. Many hydrodynamic pheno...

This paper uses computational fluid dynamics (CFD), in the form of OpenFOAM software package, to investigate forces on salt core high-pressure die casting (HPDC) when being exposed impact inflowing melt filling stage, with particular respect moment first impact—commonly known as slamming. The melt-air system is modelled via an Eulerian volume-of-fluid approach, treating air a compressible perfe...

We develop a hydroelastic model based on a {3,2}-order sandwich composite panel theory and Wagner’s water impact theory for investigating the fluid–structure interaction during the slamming process. The sandwich panel theory incorporates the transverse shear and the transverse normal deformations of the core, while the face sheets are modeled with the Kirchhoff plate theory. The structural mode...

The presence of ambient air in liquid-slamming events plays a crucial role influencing the shape liquid surface prior to impact, and distribution loads created upon impact. We study effect trapped on impact simplified geometry, by slamming horizontal flat disc onto stationary water bath at well-controlled velocity. show how trapping influences pressure peaks different radial locations disc, imp...

Syntactic foams are particulate composite materials that are extensively integrated in naval and aerospace structures as core materials for sandwich panels. While several studies have demonstrated the potential of syntactic foams as energy absorbing materials in impact tests, our understanding of their response to water impact remains elusive. In this work, we attempt a first characterization o...

Consideration of slamming loads within the structural design planning hulls is critical importance in ensuring adequate performance. However, a general engineering theory for has yet to be uncovered due intricacy interplay between complex fluid flows and nonlinear deformations, so relies on specialized theories. We propose one such case that has, until now, eluded proper description. In pursuit...