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RANS-based CFD prediction of the hydrodynamic coefficients of DARPA suboff geometry in straight-line and rotating arm manoeuvres

Citation

Leong, ZQ and Ranmuthugala, D and Penesis, I and Nguyen, HD, RANS-based CFD prediction of the hydrodynamic coefficients of DARPA suboff geometry in straight-line and rotating arm manoeuvres, International Journal of Maritime Engineering, 157, (A1) pp. A41-A52. ISSN 1479-8751 (2015) [Refereed Article]

Copyright Statement

Copyright 2015 The Royal Institution of Naval Architects

Official URL: http://www.rina.org.uk/ijme.html

DOI: doi:10.3940/rina.ijme.2015.al.308

Abstract

Computational Fluid Dynamics (CFD) simulations using Reynolds Averaged Navier-Stokes (RANS) equations are increasingly adopted as an analysis tool to predict the hydrodynamic coefficients of underwater vehicles. These simulations have shown to offer both a high degree of accuracy comparable to experimental methods and a greatly reduced computational cost compared to Large Eddy Simulation (LES) and Direct Numerical Simulation (DNS). However, one of the major challenges faced with CFD simulations is that the results can vary greatly depending on the numerical model settings. This paper uses the DARPA SUBOFF hull form undergoing straight-line and rotating arm manoeuvres at different drift angles to analyse the hydrodynamic forces and moments on the vehicle against experimental data, showing that the selection of the boundary conditions and turbulence models, and the quality of the mesh model can have a considerable and independent effect on the computational results. Comparison between the Baseline Reynolds Stress Model (BSLRSM) and Shear Stress Transport with Curvature Correction (SSTCC) were carried out for both manoeuvres, showing that with a sufficiently fine mesh, appropriate mesh treatment, and simulation conditions matching the experiments; the BSLRSM predictions offer good agreement with experimental measurements, while the SSTCC predictions are agreeable with the longitudinal force but fall outside the experimental uncertainty for both the lateral force and yawing moment.

Item Details

Item Type:Refereed Article
Keywords:Interaction, AUV, Submarine, Hydrodynamics
Research Division:Engineering
Research Group:Maritime Engineering
Research Field:Ship and Platform Hydrodynamics
Objective Division:Transport
Objective Group:Water Transport
Objective Field:Water Transport not elsewhere classified
Author:Leong, ZQ (Dr Zhi Leong)
Author:Ranmuthugala, D (Professor Dev Ranmuthugala)
Author:Penesis, I (Associate Professor Irene Penesis)
Author:Nguyen, HD (Dr Hung Nguyen)
ID Code:99710
Year Published:2015
Web of Science® Times Cited:1
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2015-04-02
Last Modified:2017-11-03
Downloads:1 View Download Statistics

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