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Dr. R. S. Ranasinghe
Senior Lecturer (G I)
Civil Engineering Faculty of Engineering Technology
web RG GS
Office: 011-2881470, Ext: 470
Dr. Suminda Ranasinghe obtained his first degree from the University of Moratuwa, Sri Lanka with a first class honours in Civil Engineering. He then obtained his Master’s degree and Doctorate specializing in Coastal Engineering from the University of Tokyo, Japan. Soon after the completion of his PhD, Dr. Ranasinghe joined the Department of Civil Engineering, The University of Tokyo as an Assistant Professor and then provided his services as a Lecturer at the School of Planning, Architecture & Civil Engineering, Queen’s University of Belfast, UK. After returning to Sri Lanka in 2011, he made contributions to the development of non-state sector educational institutes in Sri Lanka in partnership with University of the West of England and Heriot-Watt University, UK.
His area of specialization is Coastal Engineering and his research interests include physical and numerical modelling of nearshore hydro-morphodynamics, coastal structures, wave energy converters, climate change impact on coastal zones and image analysis techniques. Dr. Ranasinghe is an Associate Member of the Institute of Engineers Sri Lanka.
Area of Specification:
Hydraulic and Coastal Engineering
Nearshore hydro-morphodynamics, Coastal structures, Climate change impacts on coastal zone, Wave energy converters, image analysis techniques
BTech (Civil Engineering)
CVX3340 – Introduction to Hydraulics & Hydrology , CVX5531 – Mechanics of Fluids, CVX5242 – Mechanics of Fluids
Open University Research Award (2021)
APAC 2009 Award (2009) for the best paper
Awarded by the Danish Hydraulic Institute and Nanyang Technological University, Singapore at the 5th International Conference on Asian and Pacific Coasts. 13-16th October.
Monbu-kagaku-sho Scholarship (2006) to pursue Doctoral degree in Civil Engineering.
Awarded by the Ministry of Education, Culture, Sports, Science and Technology, Japan.
“Furuichi” Award (2005) for the excellence in research, thesis and presentation (MEng).
Awarded by the Department of Civil Engineering, The University of Tokyo, Japan.
ADB-JSP Scholarship (2003) to pursue MEng degree in Civil Engineering.
Awarded by the Asian Development Bank.
University of Moratuwa Award (2002) for the best Civil Engineering graduand in Water and Environmental Engineering.
Awarded by the University of Moratuwa, Sri Lanka.
Westpac Award (1992) in Australian Mathematics Competition.
Awarded by The University of Canberra, Australia.
Ranasinghe, R.S. “Modelling of wave induced currents in the vicinity of submerged structures under regular waves using nonlinear wave models,” Ocean Engineering Elsevier (submitted).
Ranasinghe, R.S. (2021) “Simulation of breaking waves over different seabed configurations using phase-resolving wave models,” Journal of the National Science Foundation of Sri Lanka 49(1), 67-78.
Ranasinghe, R.S. (2020) “Modelling of wave energy dissipation over porous mounds using Boussinesq-type equations,” Engineer Journal of Institution of Engineers Sri Lanka 53 (3), 27-36.
Ranasinghe, R.S. (2020) “A comparative study of eddy viscosity type sub-models for simulating wave breaking induced energy dissipation in Boussinesq models,” Engineer Journal of Institution of Engineers Sri Lanka 53 (2), 1-12.
Ranasinghe, R.S. (2018) “Numerical modelling of wave transformation over submerged breakwaters using Boussinesq-type models,” Journal of the National Science Foundation, Sri Lanka49 (3), 369-379.
Ranasinghe, R.S., Fukase, Y. Sato, S., Tajima, Y. (2011) “Local concentration of waves due to abrupt alongshore variation of nearshore bathymetry,” Coastal Engineering Journal 53 (3), 20-32.
Fukase, Y., Sato, S., Tajima, Y., Ranasinghe, R.S. (2010) “Mechanisms and countermeasures for local amplification of long-period waves due to alongshore change in nearshore bathymetry (in Japanese),” Coastal Engineering Japan, 57(2) 1282-1286.
Fukase, Y., Ranasinghe, R.S., Tajima, Y., Sato, S. (2009) “Transformation of long-period giant waves on the Shimoniikawa coast (in Japanese),” Coastal Engineering Japan, 56(2) 1411-1415.
Ranasinghe, R.S., Sato, S. (2007) “Beach morphology behind single impermeable submerged breakwater under obliquely incident waves,” Coastal Engineering Journal 49 (1), 1-24.
Koibuchi, Y., Honda, T., Welhena, T., Ranasinghe, R.S., Sato, S. (2005) “The concentration mechanism of damage to south-west coast of Sri Lanka by Indian Ocean Tsunami (in Japanese),” Coastal Engineering Japan, 52(3): 1411-1415.
Ranasinghe, R.S. (2020) “Simulating Evolution of Waves & Currents around Submerged Breakwaters,” at the 22nd IAHR-APD Congress, Sapporo, Japan (accepted for publication)
Ranasinghe, R.S., Fukase, Y., Sato, S., Tajima, Y. (2010) “Locally concentrated damage at Shimoniikawa coast, Toyama Bay, Japan due to giant swell waves,” 32nd Int. Conf. Coastal Engineering, Shanghai, China, paper no: waves. 21. Retrieved from http://journals.tdl.org/ICCE/
Ranasinghe, R.S., Sato, S., Tajima, Y. (2009) “Modelling of waves & currents around porous submerged breakwaters,” in Proc. Coastal Dynamics 2009, ASCE, Tokyo, Japan. paper no.12 (CD proceedings)
Ranasinghe, R.S., Sato, S., Tajima, Y. (2009) “Boussinesq modeling of waves and currents over submerged breakwaters,” in Proc.5th International Conference on Asian and Pacific Coasts, Singapore, pp 58-64.
Ranasinghe, R.S., Sato, S., Tajima, Y., Muliawan, M.J. (2008) “Evolution of nearshore currents around submerged breakwaters,” in Proc.31st Int. Conf. Coastal Engineering, ASCE, Hamburg, Germany, pp. 927-939.
Ranasinghe, R.S., Sato, S. (2007) “Longshore sand transport rate measurements using small-scale physical models,” in Proc.Coastal Sediments ’87, ASCE, New Orleans, Lousiana, USA, pp. 68-81.
Ranasinghe, R.S., Sato, S. (2006) “Beach morphology behind an impermeable submerged breakwater under obliquely incident waves,” in Proc.30th Int. Conf. Coastal Engineering, ASCE, San Diego, USA, pp. 3682-3694.
Development of a numerical model to simulate nearshore wave currents over porous beds.
Simulation of solitary wave interactions with porous submerged structures.
“Investigation of shoreline erosion problem near Kahawa area along Colombo-Galle main road”,undergraduate project, 2019-20, The Open University of Sri Lanka.
“Investigation of sediment dynamics around Oluvil harbor and in adjacent coastal areas”, undergraduate project, 2019-20, The Open University of Sri Lanka.
“Investigation of circulation patterns behind submerged breakwaters”, undergraduate project, 2019-20, The Open University of Sri Lanka.
“Development of one-line model based on Kamphuis (1991) sediment transport equation”, undergraduate project, 2015-16, University of the West of England, UK.
“Assessment of sediment dynamics in the Ballyhome bay, Bangor”, undergraduate project, 2010-11, Queen’s University of Belfast, UK.
“Analysis, and identification of wave focusing mechanisms along Shimoniikawa coast, Toyama, Japan”, postgraduate project, 2009-2010, The University of Tokyo, Japan.