Time domain potential and source methods and their application to twin-hull high-speed crafts. (1st February 2023)

• Record Type: Journal Article
• Authors: Kara, Fuat
• Is Part Of: Ships and offshore structures. Volume 18:Number 2(2023)
• Page Start: 191
• Page End: 204
• Publication Date: 2023-02-01
• Subjects: Boundary integral equation method -- potential and source methods -- seakeeping -- single- and multi-hull bodies -- with and without forward speed -- transient wave Green function; Ships -- Periodicals; Offshore structures -- Periodicals; Marine engineering -- Periodicals; Marine engineering -- Technological innovations -- Periodicals; Ocean engineering -- Periodicals; Ocean engineering -- Technological innovations -- Periodicals; 623.8
• DOI: 10.1080/17445302.2022.2035560
• Languages: English
• ISSNs: 1744-5302

Abstract

ABSTRACT: The numerical accuracy of time dependent potential and source methods is compared against analytical and other numerical results using an in-house transient wave-body interaction three-dimensional wave Green function computational tool of ITU-WAVE. The time dependent Impulse Response Functions (IRFs) are used to predict the behaviour of radiation forces, exciting forces, and response of floating bodies. For radiation force IRFs, the numerical results show that potential method converges with less numbers of panels compared to source method, while in the case of diffraction force IRFs, the convergence is achieved with the same number of elements for both potential and source methods. As potential method achieves convergence faster than source method for radiation force IRFs prediction, potential method is applied for the hydrodynamic and response parameters of a twin-hull high-speed craft. The present ITU-WAVE numerical results, which are compared with experimental, analytical, and other numerical results for validation purposes show satisfactory agreements.