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Novel CFD-based full-scale resistance prediction for large medium-speed catamarans
Citation
Haase, M and Zurcher, K and Davidson, G and Binns, JR and Thomas, G and Bose, N, Novel CFD-based full-scale resistance prediction for large medium-speed catamarans, Ocean Engineering, 111, (1) pp. 198-208. ISSN 0029-8018 (2016) [Refereed Article]
Copyright Statement
Copyright 2015 Elsevier Ltd. All rights reserved.
DOI: doi:10.1016/j.oceaneng.2015.10.018
Abstract
A novel CFD-based approach is presented that is used in conjunction with model test experiments to predict ship resistance at full-scale Reynolds and Froude numbers. It relies on verification using model scale experiments, including an agreement of integrated shear force with established model-ship correlation lines at model and full-scale, and includes surface roughness effects. One major advantage of the method is that the geometric dimensions of the CFD modelling remain at model scale. CFD simulation results were successfully verified considering the drag of two different catamarans at 1:22 and 1:50 model scale. Furthermore, it is shown that an identical near-wall mesh resolution can be used for both model and full-scale simulations without compromising the accuracy of the shear force component. At full-scale the deviation of resistance between CFD prediction, model test extrapolation and full-scale measurements was less than 5% at and 0.43, showing good agreement. For a novel 130 m catamaran it is shown that variations in full-scale drag for a smooth hull were as low as 5% when comparing extrapolated model scale experiments and CFD predictions. However, at such large Reynolds numbers CFD predictions for correlation and roughness allowance were significantly higher compared to estimates proposed in ITTC guidelines.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | full-scale CFD, medium-speed catamarans, resistance prediction, ship hydrodynamics, computational fluid dynamics, ship powering |
| Research Division: | Engineering |
| Research Group: | Maritime engineering |
| Research Field: | Naval architecture |
| Objective Division: | Transport |
| Objective Group: | Water transport |
| Objective Field: | Coastal sea freight transport |
| UTAS Author: | Haase, M (Dr Max Haase) |
| UTAS Author: | Zurcher, K (Mr Konrad Zurcher) |
| UTAS Author: | Binns, JR (Professor Jonathan Binns) |
| UTAS Author: | Bose, N (Professor Neil Bose) |
| ID Code: | 105517 |
| Year Published: | 2016 |
| Web of Science® Times Cited: | 32 |
| Deposited By: | NC Maritime Engineering and Hydrodynamics |
| Deposited On: | 2016-01-06 |
| Last Modified: | 2018-05-22 |
| Downloads: | 0 |
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