Blar i USN Open Archive på forfatter "Lie, Bernt"
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Study of Fluidization Regimes using OpenFOAM Computational Fluid Dynamics
Welahettige, Prasanna Kumara Welahetti; Lie, Bernt; Vågsæther, Knut; Moldestad, Britt Margrethe Emilie (Journal article; Peer reviewed, 2017)The objective of this study was using computational fluid dynamics simulation with OpenFOAM to study the fluidization properties for four types of particles classified as Geldart A, B, C and D. Fluidization regimes were ... -
Surrogate and Hybrid Models for Control
Lie, Bernt (Peer reviewed; Journal article, 2019)With access to fast computers and efficient machine learning tools, it is of interest to use machine learning to develop surrogate models from complex physics-based models. Next, a hybrid model is a combination model where ... -
Temperature control of a pilot anaerobic digestion reactor
Haugen, Finn; Bakke, Rune; Lie, Bernt (Journal article; Peer reviewed, 2013)Results of analysis and design and implementation of a temperature control system for a practical pilot anaerobic digestion (AD) bioreactor fed with dairy waste are presented. A dynamic model of the reactor temperature is ... -
Third Order Reconstruction of the KP Scheme for Model of River Tinneselva
Dissanayake, Susantha; Sharma, Roshan; Lie, Bernt (Journal article; Peer reviewed, 2017)The Saint-Venant equation/Shallow Water Equation is used to simulate ow of river, ow of liquid in an open channel, tsunami etc. The Kurganov-Petrova (KP) scheme which was developed based on the local speed of discontinuity ... -
Using MPC to Balance Intermittent Wind and Solar Power with Hydro Power in Microgrids
Pandey, Madhusudhan; Winkler, Dietmar; Sharma, Roshan; Lie, Bernt (Peer reviewed; Journal article, 2021)In a microgrid connected with both intermittent and dispatchable sources, intermittency caused by sources such as solar and wind power plants can be balanced by dispatching hydro power into the grid. Both intermittent ...