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URANS prediction of ship hydrodynamics in head sea waves at zero forward speed with model testing validation
Citation
Jin, Y and Chai, S and Duffy, J and Chin, C and Bose, N and Sun, L, URANS prediction of ship hydrodynamics in head sea waves at zero forward speed with model testing validation, Proceedings of the ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2016), 19-24 June 2016, Busan, South Korea, pp. 1-9. ISBN 978-0-7918-4993-4 (2016) [Refereed Conference Paper]
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Copyright Statement
Copyright 2016 ASME
DOI: doi:10.1115/OMAE2016-54295
Abstract
The paper presents computations on predicting the hydrodynamics of a generic floating liquefied natural gas (FLNG) hull form in regular head sea waves using unsteady Reynolds-Averaged Navier-Stokes (URANS) solver StarCCM+. Initially, model scale simulations were conducted at model test basin water depth (d = 0.8m), with detailed verification and validation study performed to estimate numerical uncertainties. The simulation results were compared with potential flow solutions and validated against experimental studies. Using the verified numerical setup, ship hydrodynamics including wave induced loads, moments as well as ship motion responses in deep water waves(d = 8.0m) have been studied. The computed time history results were decomposed by Fourier series to obtain force/moment and motion transfer functions on the frequency domain. From the obtained results, the presented URANS approach demonstrates slightly better accuracy compared with potential flow (PF) solutions. It is also found that water depth has great influences on the computed wave force and ship motion transfer functions for certain range of wave frequencies.
Item Details
| Item Type: | Refereed Conference Paper |
|---|---|
| Keywords: | seakeeping performance, unsteady Reynolds-Averaged Navier-Stokes, transfer functions, zero forward speed |
| Research Division: | Engineering |
| Research Group: | Maritime engineering |
| Research Field: | Ocean engineering |
| Objective Division: | Energy |
| Objective Group: | Mining and extraction of energy resources |
| Objective Field: | Oil and gas extraction |
| UTAS Author: | Jin, Y (Mr Yuting Jin) |
| UTAS Author: | Chai, S (Professor Shuhong Chai) |
| UTAS Author: | Duffy, J (Associate Professor Jonathan Duffy) |
| UTAS Author: | Chin, C (Dr Chris Chin) |
| UTAS Author: | Bose, N (Professor Neil Bose) |
| ID Code: | 109751 |
| Year Published: | 2016 |
| Deposited By: | NC Maritime Engineering and Hydrodynamics |
| Deposited On: | 2016-06-29 |
| Last Modified: | 2018-04-05 |
| Downloads: | 0 |
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