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Madhawa Jayathilake

Ph.d.-kandidat Department of Engineering Sciences

Email: madhawa.jayathilake@uia.no
Phone: +47 37 23 33 08
Mobile phone: +47 94 43 57 03
Office: H4048 (Jon Lilletuns vei 9, 4879 Grimstad, Norway)

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Areas of responsibility

Higher Education

Master in Renewable Energy -University of Agder (2014-2016)
Bachelor in Mechanical and Manufacturing Engineering-University of Ruhuna, Sri Lanka (2008-2013)

Teaching

ENE-415: Design and optimization of heat and power systems

Research

Computational Fluid Dynamics (CFD) Modeling

Numerical Modeling

Hydrothermal Liquefaction

Reaction kinetics

HTL char and biochar

Rudra, Souman & Jayathilake, Madhawa (2021). Hydrothermal Liquefaction of Biomass for Biofuel Production. In NN, NN (Eds.), Earth Systems and Environmental Sciences. Elsevier. ISSN 9780124095489. doi: 10.1016/B978-0-12-819727-1.00043-1. Full text in Research Archive
Jayathilake, Madhawa; Rudra, Souman & Christy, Alfred Antony (2021). Effect of co-liquefaction of lignin and laminaria saccharina on optimization of bio-oil yield. Energy Conversion and Management: X. doi: 10.1016/j.ecmx.2021.100151. Full text in Research Archive
Jayathilake, Madhawa; Rudra, Souman & Rosendahl, Lasse A. (2021). Numerical modeling and validation of hydrothermal liquefaction of a lignin particle for biocrude production. Fuel. ISSN 0016-2361. 305. doi: 10.1016/j.fuel.2021.121498. Full text in Research Archive
Jayathilake, Madhawa; Rudra, Souman; Akhtar, Naureen & Christy, Alfred Antony (2021). Characterization and Evaluation of Hydrothermal Liquefaction Char from Alkali Lignin in Subcritical Temperatures. Materials. 14(11). doi: 10.3390/ma14113024. Full text in Research Archive
Jayathilake, Madhawa; Rudra, Souman & Rosendahl, Lasse A. (2020). Hydrothermal liquefaction of wood using a modified multistage shrinking-core model. Fuel. ISSN 0016-2361. 280. doi: 10.1016/j.fuel.2020.118616. Full text in Research Archive
Jayathilake, Rukshan & Rudra, Souman (2017). Numerical and Experimental Investigation of Equivalence Ratio (ER) and Feedstock Particle Size on Birchwood Gasification. Energies. doi: 10.3390/en10081232. Full text in Research Archive

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Jayathilake, Rukshan & Rudra, Souman (2020). Char Phase Behavior of Hydrothermal Conversion of Alkali Lignin in Subcritical Temperatures. Full text in Research Archive
Jayathilake, Madhawa & Rudra, Souman (2019). Hydrothermal Liquefaction modeling of lignin Using A Modified Multistage Shrinking-Core Model. Full text in Research Archive
Rudra, Souman & Jayathilake, Rukshan (2017). Effects of variable feedstock particle size on Birchwood gasification: A CFD approach. Full text in Research Archive Show summary
Gasification is a complex process and determining gasification characteristics experimentally is a time consuming process. Using CFD models to predict and examine about gasification characteristics, in various scenario can be time saving and safe. This paper primarily discusses the results of a CFD model, which simulates gasification characteristics of Birchwood. During the work, variation of producer gas yield, syngas composition and cold gas efficiency of the syngas were investigated with a variable biomass particle size. A 3D CFD model of a fixed bed downdraft gasifier has been developed. Euler –Euler approach has been used to model the gas phase reactions while, Lagrangian approach has been used to model the solid- gas reactions. For the simulations, biomass (Birchwood) particles with two different diameter sizes were used. They were 11.5mm and 9.18 mm. In this work, gasification parameters were examined within the equivalence ratio (ER) range from 0.2 to 0.5. The simulated results were validated using the actual fixed bed downdraft gasifier available at UIA, Norway. CO, CO2, CH4 and H2 mass fractions of the syngas were measured along with the calculated values of syngas yield and cold gas efficiency (CGE). With the 9.18mm diameter birchwood particle, CGE has shown an average maximum value of 59.4 % at the ER value of 0.5, which is a 4% improvement over the 11.5mm diameter biomass particle. In addition, Syngas yield has also shown an average maximum value of 2.8 Nm3/h with the 9.18 mm wood particle, which is an improvement of 0.1 Nm3/h over the 11.5 mm biomass particle
Rudra, Souman & Jayathilake, Rukshan (2016). A Computational Fluid Dynamics Analysis for the effects of variable Equivalence Ratio (ER) On Birchwood Gasification. Full text in Research Archive
Jayathilake, Madhawa & Rudra, Souman (2021). Numerical modelling and validation of Hydrothermal liquefaction of Lignin. Shrinking core approach on particle decomposition and a comparative analysis of biocrude and HTL char. Universitetet i Agder. ISSN 9788284270715. Full text in Research Archive

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Published Apr. 16, 2024 11:09 AM