Predicting motions of high-speed rigid inflatable boats: improved wedge impact prediction

Hudson, D.A., Turnock, S.R. and Lewis, S.G. (2007) Predicting motions of high-speed rigid inflatable boats: improved wedge impact prediction. In, The Ninth International Conference on Fast Sea Transportation (FAST2007), Shanghai, China, 23 - 27 Sep 2007. Shanghai, China, , 377-383.


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Modelling the performance of high speed planing craft is
challenging. The inherent unsteady free surface flows are
complex to model numerically, resulting in computationally expensive predictions. Non-linear equations of motion are required to predict the movement of the vessel. Previous work used a strip theory that predicts the forces of wedge impact using a potential flow method. This work aims to improve this numerical model by increasing the accuracy of predicting the forces acting on a wedge during impact. A viscous two dimensional computational fluid dynamic analysis is used to compute the wedge impacts, and the results are compared with the potential flow method used in the original motions prediction solver. Results of the computational fluid dynamics predictions are also compared with experimental data. Overall, good agreement is found with the experimental results and the computed wedge impact prediction improves upon the 2D potential theory results.

Item Type: Conference or Workshop Item (Paper)
Related URLs:
Subjects: T Technology > T Technology (General)
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
Divisions : University Structure - Pre August 2011 > School of Engineering Sciences > Fluid-Structure Interactions
ePrint ID: 48849
Accepted Date and Publication Date:
September 2007Published
Date Deposited: 16 Oct 2007
Last Modified: 31 Mar 2016 12:25

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