Heave and sway hydrodynamic coefficients of ship hull sections in deep and shallow water using Navier-Stokes equations. (15th April 2018)

• Record Type: Journal Article
• Authors: Gadelho, J.F.M.; Rodrigues, J.M.; Lavrov, A.; Guedes Soares, C.
• Is Part Of: Ocean engineering. Volume 154(2018)
• Page Start: 262
• Page End: 276
• Publication Date: 2018-04-15
• Subjects: OpenFOAM -- CFD -- Added mass -- Damping coefficient -- Potential flow -- Shallow water; Ocean engineering -- Periodicals; Ocean engineering; Periodicals; 620.4162
• DOI: 10.1016/j.oceaneng.2018.02.025
• Languages: English
• ISSNs: 0029-8018

Abstract

Abstract: A methodology is presented to numerically determine the hydrodynamic coefficients of ship hull sections using a time domain Navier-Stokes model. Results are presented for three topologically distinct sections of a ship hull (skeg, midship and bulbous bow) subjected to heave and sway motions in shallow and deep water. The simulations have been performed with the open source Computational Fluid Dynamics OpenFOAM software. A preliminary assessment of the necessity of viscosity consideration on the determination of the hydrodynamic coefficients, which should depend on the section topology and depth, is carried out. Results demonstrate an overall good agreement of the added mass and damping coefficients between the calculated values and the ones obtained with a boundary equation method potential flow formulation. An exception is the skeg section in shallow waters. Highlights: The hydrodynamic coefficients of ship hull sections are calculated using a Navier Stokes model. Results are presented for skeg, midship and bulbous bow sections of a ship hull. The simulations have been performed with the open source CFD OpenFOAM software. A preliminary assessment of the necessity of viscosity consideration is carried out. Results demonstrate an overall good agreement with the ones obtained with potential flow.