Browsing USN Open Archive by Author "Jayarathna, Chameera K."
Now showing items 1-6 of 6
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Combined calcination and CO2 capture in cement clinker production by use of electrical energy
Tokheim, Lars-André; Mathisen, Anette; Øi, Lars Erik; Jayarathna, Chameera K.; Eldrup, Nils Henrik; Gautestad, Tor (Chapter, 2019)The technical feasibility of electrifying the calcination process in a precalciner cement kiln system was assessed by studying different electrification concepts. Resistance-based heating was selected as it equires no CO2 ... -
CPFD simulation of enhanced cement raw meal fluidization through mixing with coarse, inert particles
Samani, Nastaran Ahmadpour; Jayarathna, Chameera K.; Tokheim, Lars-Andre (Journal article, 2020)In the current work, computational particle and fluid dynamics (CPFD) simulations are used to study an electrically heated bubbling fluidized bed (BFB) used as a calciner in a cement manufacturing process, applying a ... -
Experimental and computational study of the effect of particle size distributions on the flow behavior in fluidized beds
Jayarathna, Chameera K. (Master thesis, 2009)The aim of the work of this thesis is to study the flow behavior of a fluidized bed with respect to different particle mixtures. The efficiency of the fluidized bed reactors depends on the bubble distribution, bubble size ... -
Experimental Study and CFD Modelling of Minimum Fluidization Velocity for Geldart A, B and D Particles
Amarasinghe, Widuramina Sameendranath; Jayarathna, Chameera K.; Ahangama, Bovinda S; Tokheim, Lars-André; Moldestad, Britt Margrethe Emilie (Journal article; Peer reviewed, 2017)The aim of this study is to determine minimum fluidization velocity of three different particles which represent different Geldart classification groups and to compare the results with computational results. The experiments ... -
Process Simulation of Calcium Looping With Indirect Calciner Heat Transfer
Jayarathna, Chameera K.; Mathisen, Anette; Øi, Lars Erik; Tokheim, Lars-André (Conference object; Peer reviewed, 2015-11-25)In calcium looping (CL), calcium oxide (CaO) is used as a sorbent for carbon dioxide (CO2). The CO2 reacts with CaO to produce calcium carbonate (CaCO3) in a carbonator operating at about 650 °C. The CaCO3 is then sent to ... -
Validation of results from Barracuda® CFD modelling to predict the minimum fluidization velocity and the pressure drop of Geldart A particles
Jayarathna, Chameera K.; Moldestad, Britt Margrethe Emilie; Tokheim, Lars-André (Journal article; Peer reviewed, 2017)Fluidization characteristics such as the minimum fluidization velocity and the bed pressure drop are important for the design of an efficient fluidized bed. These characteristics can be measured experimentally, but also ...