While time-frequency analysis of wave signals is popular in many fields, it has only recently begun to be employed to study surface wave patterns generated by ships or vessels in open water. This project aims to implement new mathematical and computational models for simulating ship wakes and develop the theoretical foundations necessary to analyse the frequency spectrum of the wave pattern. The expected outcomes of this project include a suite of algorithms that back-calculate the hull shape and operating conditions of a moving ship given only the surface height data measured at a single point. These results should have direct implications for measuring damage to coastal zones by ship wakes and for surveillance of shipping channels.
Funding / Grants
- Australian Research Council - ARC Discovery Project (DP180103260) (2018 - 2021)
Chief Investigators
- Professor Scott McCue
- Professor Timothy Moroney
- Associate Professor Jonathan Binns (AMC)
- Associate Professor Gregor Macfarlane (AMC)
Team
Partners
Publications
- Pethiyagoda, Ravindra, Moroney, Timothy, McCue, Scott (2018) Efficient computation of two-dimensional steady free-surface flows. International Journal for Numerical Methods in Fluids, 86 (9), pp.607-624.
- Pethiyagoda, Ravindra, Moroney, Timothy, Macfarlane, Gregor, Binns, Jonathan, McCue, Scott (2018) Time-frequency analysis of ship wave patterns in shallow water: Modelling and experiments. Ocean Engineering, 158, pp.123-131.
- Buttle, Nicholas, Pethiyagoda, Ravindra, Moroney, Timothy, McCue, Scott (2018) Three dimensional free-surface flow over arbitrary bottom topography. Journal of Fluid Mechanics, 846, pp.166-189.
- Pethiyagoda, Ravindra, McCue, Scott, Moroney, Timothy (2017) Spectrograms of ship wakes: Identifying linear and nonlinear wave signals. Journal of Fluid Mechanics, 811, pp.189-209.
- Pethiyagoda, Ravindra, McCue, Scott, Moroney, Timothy (2015) Wake angle for surface gravity waves on a finite depth fluid. Physics of Fluids, 27 (6), pp.Article number: 061701 1-7.
- Pethiyagoda, Ravindra, McCue, Scott, Moroney, Timothy (2014) What is the apparent angle of a Kelvin ship wave pattern?. Journal of Fluid Mechanics, 758, pp.468-485.
- Pethiyagoda, Ravindra, McCue, Scott, Moroney, Timothy, Back, Julian (2014) Jacobian-free Newton-Krylov methods with GPU acceleration for computing nonlinear ship wave patterns. Journal of Computational Physics, 269, pp.297-313.
