154714 - Comparisons between seabed and free surface effects.pdf (3.74 MB)
Comparisons between seabed and free surface effects on underwater vehicle hydrodynamics
Version 2 2023-06-05, 03:21
Version 1 2023-05-21, 15:30
journal contribution
posted on 2023-06-05, 03:21 authored by Xavier Ling, Zhi Quan LeongZhi Quan Leong, Christopher ChinChristopher Chin, Michael Woodward, Jonathan DuffyJonathan DuffyThis paper presents a numerical study on the hydrodynamic coefficients of the DARPA SUBOFF hull when deeply submerged and near the seabed. The CFD-based model was validated with experimental data, namely experiments involving the SUBOFF and BB2 undergoing straight-ahead motion near the free surface and the SUBOFF only when deeply submerged at drift angles without the influence of either the free surface or the seabed. The validated model was used to investigate the effects of the seabed's effect on the hydrodynamic behaviour of the SUBOFF across a range of speeds, drift angles, and submergence depths. The results were then compared to operations near the free surface. The results show that the seabed has a smaller influence on the hydrodynamic coefficients compared to the free surface. Also, the hydrodynamic coefficients do not vary with Froude number when near the seabed but do vary with Froude number when near the free surface.
History
Publication title
International Journal of Naval Architecture and Ocean EngineeringVolume
14Article number
100482Number
100482Pagination
1-14ISSN
2092-6782Department/School
Australian Maritime CollegePublisher
Society of Naval Architects of KoreaPlace of publication
Korea, Republic ofRights statement
Copyright 2022 Society of Naval Architects of Korea. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).Repository Status
- Open