Session: 08-06-01 non-presentations

Paper Number: 122501

122501 - Performance Prediction of Planing Hull With Stern Interceptor in Calm Water and Head Waves 

In high-speed vessels with planing hulls, hydrodynamic forces predominate over hydrostatic forces like buoyancy. These vessels become more resistant as the speed increases, especially when travelling at planing speeds. When the Froude value is higher than 1.0, a vessel is considered to be planing.  CFD has recently developed into a simple tool for researching, analyzing and visualizing ship performance. In this study the performance of planing hull is studied for the hull with and without interceptor in calm water and head waves using numerical approach. The hydrodynamics of planing hulls using the computational models not only predict drag but also the free surface wave of hull because it is expensive and difficult to capture in experiments. A commercial RANSE based code is used in the simulation of flow in this study. The same computational simulations are considered for further study in regular head waves for planing hull with and without interceptor. In recent years, because it is expensive and challenging to accurately measure in experiments, the hydrodynamics of planing hulls have been researched using computational models to estimate running trim, drag, as well as the free surface wave and pressure distribution on the bottom of the hull. This paper's objective is to give the results of a numerical analysis for a planing hull with an interceptor in both calm water and waves. Through computational visualization, the mechanics of a planing vessel are investigated. Experiments carried out in the Towing tank at the Department of Ocean Engineering, IIT Madras, serve to confirm the CFD results. The results show better performance on the vessel with reduction in resistance and trim both in calm water and regular head waves when the hull is fitted with interceptor.

Presenting Author: Suneela Jangam AMET University

Presenting Author Biography: Presently working as Assistant Professor in AMET University in the Department of Naval Architecture and Offshore Engineering.

Authors:

Suneela Jangam AMET University