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

Author:

Nikfarjam M.1,Koto J.1,Yaakob O.B.2,Seif M.S.3,Aref A.3

Affiliation:

1. Faculty of Mechanical Engineering , University of Technology Malaysia 81310 , UTM Skudai , Malaysia nikfarjam1400@yahoo.com

2. Marine Technology Centre , University of Technology Malaysia , Malaysia

3. Department of Mechanical Engineering , Sharif University of Technology , Malaysia

Abstract

Abstract 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.

Publisher

Walter de Gruyter GmbH

Subject

Fluid Flow and Transfer Processes,Transportation,Civil and Structural Engineering

Reference26 articles.

1. [1] Von-Karman T. (1929): The impact on seaplane floats during landing. – National Advisory Committee for Aeronautics: NACATN321. pp.2-8.

2. [2] Wagner H. (1932): Landing of Sea Planes. – NACA Tech Memo.

3. [3] Payne P.R. (1988): Design of high-speed boats. – Vol.1: Planing. Fishergate Inc.

4. [4] Korobkin A.A. and Pokhnachov V.V. (1988): Initial stage of water impact. – Annual Review of Fluid Mechanics, vol.20.

5. [5] Dobrovolskaya Z.N. (1969): On some problems of similarity flow of fluid with a free surface. – Journal of Fluid Mechanics, vol.3, pp.805-829.

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