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Dr. (Mrs.) C.W. Sahabandu

B.Sc. (Honors) Mathematics (University of Peradeniya), Ph.D. Postgraduate Institute of Science, University of Peradeniya.

Confirmed Lecturer

Dept. of Mathematics
  • Room No. 338, 3rd Floor, Science & Technology Building, Central Campus, Nawala, Nugegoda
  • Ext: 3403 Direct line: +94112881443
  • cwsah@ou.ac.lk

About me: I am a Confirmed Lecturer attached to the Department of Mathematics, Faculty of Natural Sciences, The Open University of Sri Lanka. I hold a B.Sc. (Hons) Special Degree in Mathematics from the University of Peradeniya, where I graduated with First Class Honors, received a University Award for Academic Excellence, and was recognized on the Dean’s List. I completed my Ph.D. at the Postgraduate Institute of Science, University of Peradeniya, in 2024. My research interests primarily lie in topology, nonlinear dynamics, and computational mathematics. I possess strong technical proficiencies in Python, Maple, COMSOL Multiphysics, Filmora Wondershare, Microsoft Office Suite (Word, Excel, PowerPoint), and LaTeX.

Mathematics

Interests lay predominantly in the fields of topology, nonlinear dynamics and computational mathematics.
  •  Lecturer ,    Department of Mathematics, Faculty of Natural Sciences,   

                                                            The Open University of Sri Lanka (2022 January – Present)

  •  Temporary Demonstrator, Department of Mathematics, Faculty of Natural Sciences,   

                                                              The Open University of Sri Lanka (2021 March – 2021 December)

  • Temporary Demonstrator, Department of Mathematics, Faculty of Science, University of   

                                                             Peradeniya (2020 March -2021 March) 

 

 

 

                    

 

PEU3301 -Foundations of Mathematics
PEU5304 -Introduction to Complex Analysis
PEU5305 -Complex Analysis I
ADU5308 -Graph Theory
ADU4230-Discrete Mathematics

  • Sahabandu C.W., Karunarathna D., Sewvandi P., Juman Z.A.M.S., Dewasurendra M., and Vajravelu K. (2021). A Method of Directly Defining the inverse Mapping for a nonlinear partial differential equation and for systems of nonlinear partial differential equations. Computational and Applied Mathematics. 40.6, 1-16. 

https://doi.org/10.1007/s40314-021-01627-y

 

  • Sahabandu C.W., Dewasurendra M.,  Juman Z.A.M.S., Vajravelu K., Chamkha A.J., Semi-analytical method for propagation of harmonic waves in nonlinear magneto-thermo-elasticity, Computers & Mathematics with Applications, Volume 105,2022, Pages 107-111, ISSN 0898-1221, 

https://doi.org/10.1016/j.camwa.2021.11.020

  • W. Sahabandu, Z.A.M.S. Juman, K. Vajravelu, B. Spangler & M. Dewasurendra (2023). Modeling and semi-analytical solution for immiscible and miscible fingers formation during enhanced oil recovery, International Journal of Modelling and Simulation, 12 (1), Taylor & Francis, 0228-6203.

https://doi.org/10.1080/02286203.2023.2296369

 

  • Sahabandu C.W., and Dewasurendra M. (2024). Method of Directly Defining the Inverse Mapping for Nonlinear Fuzzy Heat-like Partial Differential Equations, Ceylon Journal of Science 53 (1) 2024: 133-138. https://doi.org/10.4038/cjs.v53i1.8197

 

  • Sahabandu C.W., and Dewasurendra M. (2024). Modelling and semi-analytical solutions for fingering instability during zero-dimensional nano floodings, Ceylon Journal of Science 53 (4) 2024: 631-638. https://doi.org/10.4038/cjs.v53i4.8321

 

Full papers

  • Sahabandu C.W., and Dewasurendra M., On the Choice of the Inverse Linear Mapping in the Method of Directly Defining the Inverse Mapping for Nonlinear Partial Differential Equations, Annual International Conference on Business Innovation (ICOBI), 24th November 2023, 22-30.

 

  • Sahabandu C.W., and Dewasurendra M., COMSOL Multiphysics: CFD Simulations of Miscible and Immiscible Fingering Instability in Enhanced Oil Recovery, International Conference on Computational and Mathematical Modelling 2024, 170-176.
  • Sahabandu C.W., Computing Bump-persistence Landscapes in Topological Data Analysis, RESCON 2020, Proceedings of the Postgraduate Institute of Science Research Congress, 26th  – 28th  November 2020, Abstract ID: 119 – ICT, Mathematics and Statistics,77. 
  • Sahabandu C.W., Karunarathna W.H.D.T., Dewasurendra M, Application of the Method of Directly Defining the Inverse Mapping to Fingering Phenomenon in the Oil Industry, RISTCON 2021, ISSN: 1391-8796 Proceedings of 8th  Ruhuna International Science & Technology Conference, University of Ruhuna, Matara, Sri Lanka, February 17th , 2021, 59.
  • Sahabandu C.W., Dewasurendra M., and Juman Z.A.M.S., An Extension to Method of Directly Defining the Inverse Mapping for Propagation of Harmonic Waves in Nonlinear Generalized Magneto – thermoelasticity with Two Relaxation Times Under Influence of Rotations, Proceedings of the International Conference on Mathematics and Mathematics Education: 8th  and 9th  October 2021, Abstract ID:18, Mathematics, 13.
  • Karunarathna W.H.D.T., Sahabandu C.W., and Dewasurendra M., Semi-analytic Solutions for the Transitional Korteweg-de Vries Equation Via Similarity Solutions, Proceedings of the International Conference on Mathematics and Mathematics Education: 8th  and 9th  October 2021, Abstract ID:21, Mathematics, 16.  
  • Sahabandu C.W., and Dewasurendra M.,  Mathematical Modellings for Fingering Phenomenon of Incline Oil Layers With and Without Considering the Mass Flow Rates and Their Solutions Using the Method of Directly Defining the Inverse Mapping, RESCON 2021, Proceedings of the Postgraduate Institute of Science Research Congress, 29th  – 31st  October 2021, Abstract ID: 99 – ICT, Mathematics and Statistics, 59.  
  • Sahabandu C.W., and Dewasurendra M., Mathematical Modelling and MDDiM Solutions for Fingering Phenomenon during the Nano Silica Flooding, Proceedings of the ISymRU 2021, Mathematics, Statics and Data Science, 21st -22nd December 2021, 112.
  • Sahabandu C.W., and Dewasurendra M., MDDiM Solutions for the Mathematical Modeling of Fingering Phenomenon in Oil Industry During the Carbonate-water Injection, RISTCON 2022, 9th Ruhuna International Science & Technology Conference, University of Ruhuna, Matara, Sri Lanka, 19th January 2022, ISSN 1391-8796, 47.    
  • Sahabandu C.W., Enhanced Oil Recovery Using One-dimensional Nano Particles, RESCON 2022, Proceedings of the Postgraduate Institute of Science Research Congress, 29th – 30th  October 2022, Abstract ID: 75 – ICT, Mathematics and Statistics. 
  • Sahabandu C.W., and Dewasurendra M., Mathematical Modelling for Fingero-imbibition during Carbonated Water Flooding with Magnetic Field Effect, Proceedings of the International Conference on Mathematics and Mathematics Education: 14th-15th July 2023, Abstract ID: 4, 4.
  • Sahabandu C.W., and Dewasurendra M., MDDiM Solutions in Solving Nonlinear Fuzzy Heat-like Equations, Proceedings of the International Conference on Mathematics and Mathematics Education: 14th-15th July 2023, Abstract ID: 5, 5.
  • Sahabandu C.W., and Dewasurendra M., Choice of the Inverse Linear Operator in the Method of Directly Defining the Inverse Mapping for Inhomogeneous Heat and Advection Problems, Proceedings of Peradeniya University International Research Sessions 2023, Sri Lanka, Vol. 24, 20 th & 21st September 2023, Abstract ID: 178, 213.
  • Sahabandu C.W., and Dewasurendra M., Mathematical Modelling for Fingero-imbibition Phenomenon Influence of the Magnetic Field during Different Nano Floodings, Proceedings of the Open University Research Sessions (OURS 2023) ISSN 2012-9912 © The Open University of Sri Lanka, 10th November 2023, 158.
  • Sahabandu C.W., and Dewasurendra M., CFD Simulation for Miscible and Immiscible Viscous Fingering Formation for Distinct Injective Fluids, ISSN: 1391-8796, Proceedings of 11th Ruhuna International Science & Technology Conference University of Ruhuna (RISTCON 2024), Matara, Sri Lanka January 24, 2024, 61.
  • Sabri M., and Sahabandu C.W., tailed quantum search on cyclic graphs. Proceeding of the International Research Conference of the Open University of Sri Lanka (IRC-OUSL2024) ISSN 2012-9912©The Open University of Sri Lanka, 8th November 2024.

Extended Abstract

  • Sahabandu C.W., and Amarasinghe A.K., Topological Data Analysis Using

Bump-Function, Proceedings of the Vavuniya University International Research

Conference,17th November 2023, 31-35.

  

  • University Award in Academic Excellence
  •  Dean’s List Award (2018/2019)
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