Senior Lecturer (G I)
B.Sc. (Eng) (Hons) Peradeniya (1985), SM (1989) and PhD (1993) Massachusetts Institute of TechnologyCivil Engineering
Faculty of Engineering Technology
RG GS
Contact:
Colombo Regional Centre, Block 1, First Floor
Office: 011-2881472, Ext: 472 Mobile: 0777-763123
E-mail: pnwik@ou.ac.lk tomwiks@yahoo.com
Dr. Nalin Wikramanayake graduated with the degree of B. Sc. (Eng) (Hons) in 1985, and completed the degrees of Master of Science (SM, 1989) and Doctor of Philosophy (PhD, 1993) in Civil and Environmental Engineering at the Massachusetts Institute of Technology.
He was an Assistant Lecturer (1986-1993) and Senior Lecturer (1994 to 1996) in the Department of Civil Engineering at the University of Peradeniya and worked as a Senior Research Engineer at the Lanka Hydraulic Institute from 1996 to 1998 before joining the Open University of Sri Lanka as a Senior Lecturer in the Department of Civil Engineering in 1999.
Dr. Wikramanayake has participated in many scientific programs at the national and international level. He has collaborated in research and research supervision with many overseas and Sri Lankan universities. He has advised and participated in capacity building with many govermental and non-governmental organizations in Sri Lanka.
Last Updated on 2 years
Areas of Specialization:Coastal Engineering, Coastal Zone Management, Environmental Management, Hydrology, Wastewater treatment, Distance education
Research interests:Coastal and ocean wave climate and impacts, Coastal sediment transport, Seasonally open coastal inlets, Extreme value analysis, Coastal flooding, Appropriate technology for wastewater treatment, Urban environmental management, Learning analytics
Affiliations:MIE (SL), CEng
Course Coordination:2021/22 – CVX3340 – Introduction to Hydraulics and Hydrology
Ongoing Research:Coastal wave climate of Sri Lanka – relationship to the global climate and applications to coastal engineering and coastal zone management
Extreme rainfall events in Sri Lanka – statistical analysis and relationship to the global climate
Learning analytics – using information on student backgrounds and student progress for Learner Support
Publications:Journal Papers
Lokuliyana, R., Folley, M., Gunawardane, P. and Wikramanayake, P.N. (2020) Sri Lankan wave energy resource assessment and characterisation based on IEC standards, Renewable Energy
Perera, K., Sumathipala, P.L.N.S. and Wikramanayake, P.N. (2015) Interdependence between the Water Levels of Kotte Canal and Kelani River using Copulas, Sri Lankan Journal of Applied Statistics
Wickramagamage, P., Wikramanayake, P.N., Kumarihamy, K., Vidanapathirana, E. and Larson, M. (2012) A comparative study of elevation data from different sources for mapping coastal inlets and their catchment boundaries Journal of the National Science Foundation of Sri Lanka, Vol. 40, No. 1
Wikramanayake, P. N.(1987) Flood Forecasting in the Kalu Ganga Basin Journal of the Institute of Engineers, Sri Lanka, Vol. XV , No. 4
Technical Reports
Wikramanayake, P. N and O. S. Madsen (1994) Calculation of Suspended Sediment Transport in Wave-current Flows Contract Report DRP-94-7, Coastal Engineering Research Centre, U.S. Army Corps of Engineers.
Wikramanayake, P. N and O. S. Madsen (1994) Calculation of Movable Bed Roughness Contract Report DRP-94-5, Coastal Engineering Research Centre, U.S. Army Corps of Engineers
Wikramanayake, P. N and O. S. Madsen (1991) Simple Models for Turbulent Wave-current Bottom Boundary Layer Flow Contract Report DRP-91-1, Coastal Engineering Research Centre, U.S. Army Corps of Engineers.
Conference Proceedings
Suthakaran, R., Perera, K. and Wikramanayake, P. N. (2014) “Rainfall Intensity-Duration-Frequency Relationship for Colombo Region in Sri Lanka”, 4th SAITM Research Symposium on Engineering Advancements, South Asian Institute of Technology and Medicine, Malabe, Sri Lanka
Suthakaran, R., Perera, K. and Wikramanayake, P. N. (2014) “Identify the Best Probability Distribution for Maximum Daily Rainfall in Colombo, Sri Lanka”, International Forum for Mathematical Modeling, University of Colombo, Colombo, Sri Lanka
Wikramanayake, P. N. and Rifai, A. (2013) “Urban Flooding and Coastal Topography : A Case Study from Kalmunai, Sri Lanka”, Joint Conference of the New Zealand Hydrological Society and the Meteorological Society of New Zealand, Palmerston North, New Zealand
Wikramanayake, P. N. (2013) “Seasonally Closed Inlets, Lagoons and Floods : A Case Study of the Batticaloa Lagoon, Sri Lanka”, 10th Annual Meeting of the Asia-Oceania Geosciences Society, Brisbane, Australia
Bamunawela, R.M.J., Hettiarachchi, S. S. L., Samarawickrama, S., Wikramanayake, P.N. and Ranasinghe, R. (2013) “Impact of Climate Change on the Wave Climate of Sri Lanka”, International Conference on Structural Engineering and Construction Management, Kandy, December, 2013
Varathan, N., K. Perera and P. N. Wikramanayake (2010) “Statistical Modeling of Extreme Daily Rainfall in Colombo”, International Conference on Sustainable Built Environment, Kandy, December, 2010
Wikramanayake, P.N., P. Wickramagamage, R. M. K. Kumarihamy, E. Vidanapathirana, M. Larson and R. Ranasinghe (2010) “Seasonally Closed Tidal Inlets in Sri Lanka : Classification and Field Observations”, Physics of Estuarine and Coastal Seas, Colombo
Larson, M., Wikramanayake, P.N., Hanson, H. and Ranasinghe, R. (2009) “Seasonal Closure of Chilaw Inlet, Sri Lanka : Physical Processes and Mathematical Modeling” Coastal Dynamics ’09, Tokyo, Japan
Wikramanayake, P.N. (2008) “Integrated Study of Natural and Social Systems for Improved Coastal Zone Management” Seventh International Conference on Coastal and Port Engineering in Developing Countries, Dubai, February, 2008
Wikramanayake, P.N., Priyadarshini, W.N.C. and Liyanage, B.C. (2005) “Socio-economic and Climatic Controls on the Runoff of Fertilizer from Rice Cultivation in Sri Lanka, 2nd Annual Meeting of the Asia-Oceania Geosciences Society, Singapore
Wikramanayake, P.N. (2004) “Monitoring and Prediction of Shoreline Change for CZM : Proposed IOGOOS Pilot Project and Experiences from Sri Lanka”, Coastal Zone Asia-Pacific Conference, Brisbane, Australia, September, 2004
Wikramanayake, P.N., Guneratne, P.P., Fernando, M.M.G.S. and Ratnayake, I. (2003) “The Coastal Wave Climate of Sri Lanka : Measurements and Modeling”, Sixth International Conference on Coastal and Port Engineering in Developing Countries, Colombo, Sri Lanka, September, 2003
Wikramanayake, P.N. (2003) “Where River Basin, People and Ocean Meet : A Case Study of Negombo Lagoon”, Sri Lanka Sixth International Conference on Coastal and Port Engineering in Developing Countries, Colombo, Sri Lanka, September, 2003
Wikramanayake, P.N., Priyadarshini, W.N.C., Liyanage, B.C. and Wickremaratne, S. (2003) “Fertilizer Runoff from Rain-fed Rice Cultivation”, World Water & Environmental Resources Congress 2003, American Society of Civil Engineers, Philadelphia, June 2003
Wikramanayake, P.N. and Corea, E.J.H. (2003) “Alternative Technology for Urban Wastewater Treatment : Case Studies and Issues of Implementation and Sustainability”, World Water & Environmental Resources Congress 2003, American Society of Civil Engineers, Philadelphia, June 2003
Wikramanayake, P.N. and Pattiarachchi, C. (1999) “Field Measurements and Mathematical Modelling of Water Quality and Sediment Transport at Chilaw Lagoon and Estuary, Sri Lanka”, Proceedings of the 3rd International Symposium on Ecohydraulics, Salt Lake City, USA
Wikramanayake, P.N. and Pattiarachchi, C. (1999) “Seasonal Changes in a Tidal Inlet Located in a Monsoon Regime”, Coastal Sediments ’99, Proceedings of the 4th International Symposium on the Coastal Engineering and Science of Coastal Sediment Movement, New York, USA
Wikramanayake, P.N. and Pattiarachchi, C. (1999) “Feasibility Study for Chilaw Fishery Harbour” 5th International Conference on Coastal Engineering in Developing Countries, Cape Town, South Africa
Pattiarachchi, C. and Wikramanayake, P. N.(1999) “See-breeze Effects on Coastal Processes”, 5th International Conference on Coastal Engineering in Developing Countries, Cape Town, South Africa
Corea, E.J.H., Gamage, I.R. and Wikramanayake, P. N. (1998) “Anaerobic Filters for Sewage Treatment”, 21st WEDEC Conference, Islamabad, Pakistan
Wikramanayake, P. N (1995) “Accuracy and Interpretation of Measurements of Suspended Sediment Concentrations using Acoustic Backscatter Sensors”, Proceedings of the 4th International Conference on Coastal and Port Engineering in Developing Countries, Rio de Janeiro, Brazil.
Wikramanayake, P. N. (1994) “Sediment Suspension and Transport in Wave-current Flows : Some Model Results”, Proceedings of the IXth Congress of the Asia-Pacific Division of the IAHR, Singapore