Investigation of Wedge Water-Entry Under Symmetric Impact Loads by Experimental Tests

Yaakob, Omar; Seif, Mohammad Saeed; Koto, Jaswar

doi:10.1590/1679-78253315

Cited by 11 publications

(5 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the fluid domain, the finite volume method [19] was used to discretize Equations (6) and 7. The volume-of-fluid (VOF) method [20] was utilized for the free surface capture.…”

Section: Numerical Modelmentioning

confidence: 99%

See 1 more Smart Citation

A Comprehensive Study of the Wave Impact Loads on an Inclined Plate

Zhou

Ren

et al. 2019

JMSE

View full text Add to dashboard Cite

Water wave impact on a wet deck is an important issue in ocean engineering, and the plate-shaped structure in the splash zone tends to suffer tremendous impact loads. This work presents a method for predicting the wave slamming uplift force on a fixed plate with different inclined angles. Both numerical simulation and the scale model test of the wave impact loads on an inclined plate were performed, and a good agreement was obtained. In addition, the influence of three important wave parameters on the slamming uplift force was systematically investigated: relative deck width B/LS, relative wave height Δh/H1/3, and the plate’s inclined angle α. The results indicate that the three parameters can significantly influence the wave slamming uplift force. Finally, a developed empirical equation is proposed for estimating the wave slamming uplift force on the inclined plate.

show abstract

“…For the fluid domain, the finite volume method [19] was used to discretize Equations (6) and 7. The volume-of-fluid (VOF) method [20] was utilized for the free surface capture.…”

Section: Numerical Modelmentioning

confidence: 99%

“…[4,5], have been previously investigated. An experimental investigation of the pressure distribution on wedge sections with different deadrises during water entry was conducted [6]. Analytical and volume-of-fluid (VOF) methods were utilized to study the water entry problem with a circular cylinder [7].…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Study of the Wave Impact Loads on an Inclined Plate

Zhou

Ren

et al. 2019

JMSE

View full text Add to dashboard Cite

show abstract

“…A special test rig was designed to constrain the motion in the vertical direction. The setup of the experimental test rig was reported in Nikfarjam et al [26]. The models were dropped onto calm water surface from three different heights.…”

Section: Experimental Testsmentioning

confidence: 99%

Evaluation of Water Impact For Symmetric Wedge by Experimental and Numerical Methods

Koto

Yaakob

Seif

et al. 2019

International Journal of Applied Mechanics and Engineering

Self Cite

View full text Add to dashboard Cite

Evaluation of impact loads when a ship hull contacts the wave surface is one of the main issues for researchers who are going to design the structure of marine vehicles. In this paper, the results of experimental tests and numerical modeling of the distribution of pressure on different wedge-shaped models are reported and the effect of related parameters such as the deadrise angles, the weight and drop heights, is assessed. The output of analyses and the results can give appropriate approximations of the maximum impact pressures for the geometries that are similar to marine vehicle’s hull sections to estimate the hydrodynamic impact loads in different sea-states. In addition, other effective parameters such as the impact speed, acceleration and water entry process can be used for evaluating the performance of such crafts.

show abstract

“…At present, the related research on trimaran slamming mainly focuses on the simulation calculation and water-entry test by using the simplified hull section model. Nikfarjam [3] presents an experimental investigation on the pressure distribution on three wedge sections with 15 • , 20 • and 30 • deadrise during water-entry. The results give an appropriate approximation of the maximum pressures by the model resembling high-speed craft's hull sections, which can be used to estimate impact loads in different operational conditions.…”

Section: Introductionmentioning

confidence: 99%

CFD Prediction of Ship Seakeeping and Slamming Behaviors of a Trimaran in Oblique Regular Waves

Liao

Chen

Gui

et al. 2021

JMSE

View full text Add to dashboard Cite

The main hull encounters waves at first and causes waves to break, when trimarans are subject to the slamming in head waves. At this moment, emergence phenomena of side hulls will not occur. Thus, the slamming study of trimarans in oblique waves presents further practical significance. In this study, a CFD method is used for trimaran seakeeping and slamming analysis. An overset grid technique is adopted to simulate ship motions in waves. Firstly, to further verify the present method, a series of verification and validation studies is conducted. Then, the motion responses and slamming pressure with different control parameters, such as forward speed and ship heading angle, are calculated and discussed. The comparative results indicate that the seakeeping and slamming behaviors of trimarans differ significantly from those of conventional monohull ships. Finally, severe bow slamming and green water in oblique waves are also observed and investigated, which should be given enough attention during ship design and evaluation.

show abstract

Investigation of Wedge Water-Entry Under Symmetric Impact Loads by Experimental Tests

Cited by 11 publications

References 17 publications

A Comprehensive Study of the Wave Impact Loads on an Inclined Plate

A Comprehensive Study of the Wave Impact Loads on an Inclined Plate

Evaluation of Water Impact For Symmetric Wedge by Experimental and Numerical Methods

CFD Prediction of Ship Seakeeping and Slamming Behaviors of a Trimaran in Oblique Regular Waves

Contact Info

Product

Resources

About