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Transient slam load estimation by RANSE simulation and by dynamic modeling of a hydroelastic segmented model
Citation
McVicar, J and Lavroff, J and Davis, MR and Davidson, G, Transient slam load estimation by RANSE simulation and by dynamic modeling of a hydroelastic segmented model, Proceedings of the 30th Symposium on Naval Hydrodynamics, 2-7 November 2014, Hobart, Tasmania, pp. 1-16. ISBN 9781862958500 (2016) [Refereed Conference Paper]
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Abstract
Knowledge of loads on high speed craft such
as wave piercing catamarans is important to minimize
weight for optimum performance whilst maintaining
sufficient strength. With high speed catamarans, the
prediction of slamming loads becomes critical if these
requirements are to be met. Rigid body CFD and
hydroelastic approaches to slam load estimation for high
speed craft are considered here.
Firstly, numerical RANSE simulation of a
112m INCAT wave-piercer catamaran has been
conducted at model scale. Hydroelastic effects are not
considered in the first approach as the model is
considered rigid. Comparisons with hydroelastic model
tests results have been made and a positive correlation
to experimental data is found.
Secondly, a method of identifying the transient
slam load from the vessel hydroelastic motion response
is developed. The method is applied to tank test data
from a 2.5m hydroelastic segmented catamaran model
based on the 112m INCAT wave-piercer design. The
slam forces estimated using this method correlate well
with both the direct experimental measurements and the
CFD simulations.
The estimated peak slam forces determined by
hydroelastic motions based analysis were mostly lower
than the forces predicted by the rigid body CFD.
Additionally, the unsteady hydrodynamic whipping
loads on the demihulls could only be predicted by the
flexible analysis.
Item Details
| Item Type: | Refereed Conference Paper |
|---|---|
| Keywords: | slamming, RANSE simulation, hydroelastic model |
| Research Division: | Engineering |
| Research Group: | Mechanical engineering |
| Research Field: | Mechanical engineering not elsewhere classified |
| Objective Division: | Transport |
| Objective Group: | Water transport |
| Objective Field: | Domestic passenger water transport (e.g. ferries) |
| UTAS Author: | McVicar, J (Mr Jason McVicar) |
| UTAS Author: | Lavroff, J (Dr Jason Ali-Lavroff) |
| UTAS Author: | Davis, MR (Professor Michael Davis) |
| ID Code: | 96410 |
| Year Published: | 2016 |
| Deposited By: | Engineering |
| Deposited On: | 2014-11-04 |
| Last Modified: | 2018-04-05 |
| Downloads: | 2 View Download Statistics |
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