Abstract
Predictive skills of two numerical models, which are developed using two widely-recognised Boussinesq-type equations were further investigated in modelling evolution of water waves propagating over submerged breakwaters and the results were compared. These models are often used for practical applications due to their capabilities of simulating complex hydrodynamic characteristics in nearshore region. However, both models are found to be vulnerable to numerical instabilities when simulating wave propagation over submerged breakwaters particularly with small freeboards and steep face slopes. An artificial energy dissipation term was successfully introduced locally into one of the Boussinesq-type models to overcome unrealistic flow patterns that lead to these numerical instabilities near submerged breakwaters and the modified model was verified using a new set of wave flume data.
| Original language | English |
|---|---|
| Pages (from-to) | 369-379 |
| Number of pages | 11 |
| Journal | Journal of the National Science Foundation of Sri Lanka |
| Volume | 46 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1 Sept 2018 |
| Externally published | Yes |
Bibliographical note
Acknowledgements:The author thank Dr Bjoern Elsasser, Senior Lecturer, School of Planning, Architecture and Civil Engineering, Queen’s University of Belfast, United Kingdom for the technical assistance provided on running MIKE21 BW for numerical simulation results.
Publisher Copyright:
© 2018, National Science Foundation. All rights reserved.