Verification and validation of numerical modelling of DTMB 5415 roll decay
Mancini, Simone and Begovic, Ermina and Day, Alexander H. and Incecik, Atilla (2018) Verification and validation of numerical modelling of DTMB 5415 roll decay. Ocean Engineering, 162. pp. 209-223. ISSN 0029-8018 (https://doi.org/10.1016/j.oceaneng.2018.05.031)
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Abstract
The paper presents a numerical roll damping assessment of the intact DTMB 5415 naval ship at zero speed. Free model motions from four experimental roll decays with initial heeling angle of 4.0, 13.5, 19.58 and 24.50 deg, performed previously at the University of Strathclyde, Glasgow, have been analysed and the one with 19.58 deg initial heeling has been chosen for the Computational Fluid Dynamic (CFD) analysis. All calculations are performed using CD Adapco Star CCM+ software investigating the accuracy and efficiency of the numerical approach for case of high initial heeling angle of bare hull. In the numerical procedure the verification analysis of mesh refinement and time step was performed with the aim to investigate the numerical error/uncertainty. For grid refinement and time step, validation and verification procedure has been performed according to the Grid Convergence Index (GCI) method. Moreover, to verify the main source of the modelling error/uncertainty, the effect of degrees of freedom are evaluated, comparing the numerical results with the experimental results. Conclusions are identifying best practice for roll decay simulations commenting the accuracy of numerical results and required calculation time.
ORCID iDs
Mancini, Simone, Begovic, Ermina, Day, Alexander H. ORCID: https://orcid.org/0000-0001-6798-3468 and Incecik, Atilla;-
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Item type: Article ID code: 64838 Dates: DateEvent15 August 2018Published29 May 2018Published Online16 May 2018AcceptedSubjects: Naval Science > Naval architecture. Shipbuilding. Marine engineering Department: Faculty of Engineering > Naval Architecture, Ocean & Marine Engineering
Faculty of EngineeringDepositing user: Pure Administrator Date deposited: 23 Jul 2018 14:46 Last modified: 03 Dec 2024 12:47 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/64838