... of overtopping wedge with deadrise angle of 10 ° to 50 ° and obtained the additional slamming only exists when the wave height is large. mass coefficient by measuring acceleration. Sun et al. (2003) carried out drop tests of wedges with different deadrise angles, plate thickness KEY WORDS: Wave Energy...

... coefficient distribution and free surface profile of wedges with different deadrise angles into the calm water with constant velocity or free-falling are calculated. Furthermore, water entry of a wedge into a wave was studied. The accuracy of the code is verified by comparing with the published academic data...

... 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...

... impact on hemisphere and cone shapes with larger deadrise angles, in order to assess the slamming loads. These experimental results are used as references to validate 3-D numerical studies, which follow earlier work in two-dimensions. Yang and Qiu (2012) studied slamming problems on two-dimension...

... theoretical solution about impact pressure which is acting on water entry wedge. Chuang(1969) conducted experiments with small deadrise angle wedge, and compare the maximum pressure accordance with different angle. Zhao & Faltinsen(1993) proposed a quite new theory through extensive works about slamming. Wu...

... pyramid and Wedge-cone has been tested and the results shows that the deadrise angle has a high influence on the impact force. The values of slamming coefficient ( Cs ) have been obtained for all tested geometries. Their parabolic variations with the non-dimensional penetration have been confirmed...

... impact velocities was tested. The model was tested for three different deadrise angles. The flow field was captured with high speed camera. The pressure time history was analyzed with pressure time history. The presence of air pocket was confirmed from the present analysis. KEY WORDS: Slamming, Impact...

... Numerical simulations for the water entry of a two dimensional symmetric wedge with deadrise angle of 10 degrees have been performed to find the most dominant parameter that makes the problem hard to be solved. The water entry problem with constant velocity is simplified as the stationary wedge...

... geometries (2D and pseudo-3D) and 2D flows, as a first step to develop numerical methods for deformable and 3D cases. Slamming forces depend on the deadrise angle between body and free water surface. With air trapping the mechanism of impact becomes more complex. The effects generated by the presence of air...

...Computation of Slamming Forces on Wedges of Small Deadrise Angles Using a CIP Method Q. Yang and W. Qiu Advanced Marine Hydrodynamics Laboratory Faculty of Engineering and Applied Science Memorial University of Newfoundland St. John s, Newfoundland and Labrador, Canada ABSTRACT This paper presents...

... ABSTRACT This paper deals with some results of numerical investigations of the bottom-slamming phenomenon. As it has been shown in our recent publications the effect of hydroelasticity plays quite an important role for the case when ship's bottom has a zero deadrise angle. This paper discusses...

..., such as the deadrise angle of the wedge, the entry velocity and the structural parameters. Results obtained by numerical simulations validate the theoretical predictions. KEY WORDS: Slamming, hydroelasticity, shock spectrum. INTRODUCTION The design of modern high speed vessels requires an extreme care to fluid...

... as the steepness increases. In order to clarify the reduct ion effect of the roughness of wa- ter surface, a diagram of the maximum impact force with variat ion of the deadrise angle of the wedge is depicted. This diagram shows that the reduction effect seems significant in the region of small dead- rise angle...