Numerical Investigation of Heat Flow and Fluid Flow in a Solar Water Heater with an Evacuated-Tube Collector.Book chapter

K. D. N. Kumari and J. K. Wijerathna
Publication year: 2020

Chapter 5 of the book “Mathematical Methods in
Engineering and Applied Sciences”
Edited by Hemen Dutta,CRC press, Taylor & Francis group (ISBN-13: 978-0-367-35977-5 (Hardback)

Implementation and validation of a closed form formula for implied volatility

B.G.C.Keshan and J.K.Wijerathna
Indian journal of Science and Technology, Volume 13, Issue 38, Pages 4064-4072
Publication year: 2020

Indian Journal of Science and Technology 13(38)pp4064-4072

Simulation of Convection Flow and Sensitivity Analysis of Model Parameters of Evacuated Glass,Journal of energy reviews Tube Solar Water Heater.

K. D. N. Kumari and J. K. Wijerathna
Publication year: 2018

Journal of Energy Research Reviews, Vol(1), Issue 3,1-14,2018.

Adaptation to space mitigation guidelines and space law

CR Rajapaksa and JK.Wijerathna,
Vol 15(1)pp65-76
Publication year: 2017

Adaptation to space mitigation guidelines and space law, Astropolitics, Vol 15(1)pp65-76(2017).

“Sensitivity of Tube Inclination Angle on Thermal Performance of Water-In-Glass Evacuated Tube Solar Water Heater”

Kumari KDN. and Wijerathna JK.,
Publication year: 2017

Sensitivity of Tube Inclination Angle on Thermal Performance of Water-In-Glass Evacuated Tube Solar Water Heater” International Conference on Computational Modeling & Simulation (ICCMS-2017), University of Colombo. (Accepted February, 2017)

“Sensitivity of Acute Angle to the Heat Transfer Process of a Circular Tube with a Hemispherical Cup at the bottom of an Evacuated Solar Collector”

Kumari K.D.N. and Wijerathna JK,
Publication year: 2016

Sensitivity of Acute Angle to the Heat Transfer Process of a Circular Tube with a Hemispherical Cup at the bottom of an Evacuated Solar Collector” Symposium On Statistical & Computational Modelling With Applications,, University of Kelaniya(2016).

“Numerical simulation of heat flow of a circular tube with a hemispherical cup at the bottom in a evacuated solar collector”

Kumari K.D.N. and Wijerathna JK.,
Publication year: 2016

Numerical simulation of heat flow of a circular tube with a hemispherical cup at the bottom in a evacuated solar collector” Annual Research Symposium, University of Colombo, Sri Lanka(2016)

Some counter–intuitive remarks on quantum vertex–partitioning scheme applied to identity graphs

Mahasinghe, A., Wang, J.B. and Wijerathna, JK.,
Publication year: 2015

Some counter–intuitive remarks on quantum vertex–partitioning scheme applied to identity graphs, In Abstracts of International Conference on Quantum Foundations, Patna(2015)

Phase–modified CTQW unable to distinguish strongly regular graphs efficiently

Mahasinghe, A., Izaac, J., Wang, JB. and Wijerathna, JK.,
Journal of Physics A: Mathematical and Theoretical, 48 (26), p. 265301
Publication year: 2015

Phase–modified CTQW unable to distinguish strongly regular graphs efficiently, Journal of Physics A: Mathematical and Theoretical, 48 (26), p. 265301(2015).

Modification of information gain measure to select the best group of attributes in a data set for binary decision tree inducer

NS Ratnayaka and JK Wijerathna,
Publication year: 2015

Modification of information gain measure to select the best group of attributes in a data set for binary decision tree inducer, Proceedings of Research symposium Uva Wellassa University,(2015).

Space Debris Removal Strategies and their Feasibility

CR Rajapaksa,JK Wijerathna,
ndian journal of Science and Technology Vol(7)7,pp991-1004
Publication year: 2014

Space Debris Removal Strategies and their Feasibility, Indian journal of Science and Technology Vol(7)7,pp991-1004,(2014)

Slow platelet recovery pattern during the 2011 dengue outbreak: a Preliminary report

L Gooneratne, M Wimalachandra, J Wijerathna, N Karunathunga, S Jayasinghe,
Ceylon Medical Journal, Vol 59, No 2 PP61-63
Publication year: 2014

Slow platelet recovery pattern during the 2011 dengue outbreak: a Preliminary report, Ceylon Medical Journal, Vol 59, No 2 PP61-63(2014).

Quantum walk–based search and symmetries in graphs

Mahasinghe, A., Wang, J.B. and Wijerathna, JK.
Journal of Physics 47(50), p.505301
Publication year: 2014

Quantum walk–based search and symmetries in graphs. Journal of Physics A: Mathematical and Theoretical, 47(50), p.505301(2014).

“Numerical study of natural convection of heat flow on water through a circular pipe”

Kumari KDN. and Wijerathna JK.,
pp. 128
Publication year: 2014

Numerical study of natural convection of heat flow on water through a circular pipe” proceeding of HETC Symposium, Colombo, pp. 128 (2014).

“Numerical Simulation of Heat Flow of a Circular Tube in a Solar Collector Which is placed with an Acute-angle θ to the Horizontal”

Kumari KDN. and Wijerathna JK.,
Publication year: 2014

“Effect of the angle of the heat flux to the tube and effect of the acute-angle of the tube to horizontal on heat transferring process in solar collectors”

Kumari KDN. and Wijerathna JK
Publication year: 2014

Effect of the angle of the heat flux to the tube and effect of the acute-angle of the tube to horizontal on heat transferring process in solar collectors” 11th Annual Research Session, Eastern University, Sri Lanka(2014).

Two mathematical recreations from Sri Lankan indigenous knowledge

Anuradha Mahasinghe, J.Wijerathna, Jayantha Suranimalee ,
Publication year: 2013

Two mathematical recreations from Sri Lankan indigenous knowledge , Proceedings of the Annual Research Symposium, University of Colombo, October 3-4, (2013).

Symbolic logic, humor and inconsistency

Symbolic logic, humor and inconsistency. Indian Journal of Industrial and Applied Mathematics, 4(1), pp.99-104(2013).
Indian Journal of Industrial and Applied Mathematics, 4(1), pp.99-104
Publication year: 2013

Symbolic logic, humor and inconsistency. Indian Journal of Industrial and Applied Mathematics, 4(1), pp.99-104(2013).

Space debris mitigation and strategy analysis

C.R. Rajapaksa , JK. Wijerathna,
Publication year: 2013

Space debris mitigation and strategy analysis , Proceedings of the Annual Research Symposium, University of Colombo, October 3-4, (2013).

Two-particle Quantum walks over a Line

A. Mahasinghe, JK. Wijerathna, J. Wang,
Publication year: 2012

Two-particle Quantum walks over a Line, Proceedings of the Annual Research Symposium, University of Colombo, November-28, (2012).

The Application of the Fama and French Factor Model for the Sri Lankan Stock Market

The Application of the Fama and French Factor Model for the Sri Lankan Stock Market, Proceedings of the Annual Research Symposium, University of Colombo, November-28,(2012).
Publication year: 2012

The Application of the Fama and French Factor Model for the Sri Lankan Stock Market, Proceedings of the Annual Research Symposium, University of Colombo, November-28,(2012).

“Economic Recession Forecasting using Neural Network”

Wierathna JK, Perera SSN, NWVSC Surasinghe
Publication year: 2010

Economic Recession Forecasting using Neural Network”, SLAAS Proceedings of the 66th Annual Sessions, pp 88.

“Modeling and Forecasting the Asset Values using Ornstein Uhlnbeck Process”

Wijerathna JK, Perera SSN, Kaluarachchi HKPK, Kalubowila SS, Kuruwita TG
Publication year: 2009

Modeling and Forecasting the Asset Values using Ornstein Uhlnbeck Process” Proceedings on International Statistics Conference, Applied Statistics Association of Sri Lanka, pp 17(2009).

“Natural Ventilation Techniques for Energy Efficiency of Buildings with Parallel Ceilings in Tropical Region”

Perera SSN, Goetz T, Wijerathna JK
Publication year: 2004

Natural Ventilation Techniques for Energy Efficiency of Buildings with Parallel Ceilings in Tropical Region”, Proceedings of the Conference on Modeling and Simulation on Life Science and Material Technology, IIT, Madras, India. (Modeling and Simulation, A. Avudainayagam, P. Misra and S. Sundar (eds), Narosa publication house, ND, India) pp 97-105(2004).

Some down to earth applications in Mathematical modeling, Symposium on Mathematical modeling

J. Wijerathna
National Science Foundation, PP9-10
Publication year: 2001

Some down to earth applications in Mathematical modeling, Symposium on Mathematical modeling ,National Science Foundation, PP9-10(2001)

Numerical solutions of Darcy’s law with memory

Wijerathna JK,
Publication year: 1999

Numerical solutions of Darcy’s law with memory, Joint research work at the University of Colombo and University of Kaiserslautern, Ph.D. Disst.(1999).

Vortex Methods and Geophysical Fluid Mechanics

Wijerathna JK,
Publication year: 1995

Vortex Methods and Geophysical Fluid Mechanics, 1995 – 38B1:graph.Darst(engl) Kaiserslautern, Univ.MSc. Diss.(1995).