Parametric study of bow slamming for a KRISO container ship

Abstract

A systematic parametric study is performed in the present work to investigate the influence of various physical and geometrical parameters, such as wave steepness, wavelength, vessel speed, relative velocity on bow slamming load. For this purpose, a CFD-based one way coupled method is used. The ship's heave and pitch motions are determined using a standard potential theory-based method. Subsequently, the estimated values are used as input to a finite volume-based commercial CFD solver for computing slamming pressure. A scaled KRISO container ship (KCS) model is chosen for the analysis. Initially, the present numerical model is compared with state-of-the-art numerical and theoretical results to establish the correctness of the proposed model. A series of cases is then taken to check the dependency of bow slamming pressure on various physical and geometric parameters. In the final part of the paper, an empirical formula is developed based on this parametric study and with the help of the curve fitting method. It is observed that the developed analytical formulation corroborates well with CFD results and classification society rules and can be used for the quick prediction of bow slamming pressure for estimating design slamming load.