Now showing items 1-20 of 771

    • Abrupt high-latitude climate events and decoupled seasonal trends during the Eemian 

      Salonen, J. Sakari; Helmens, Karin F.; Brendryen, Jo; Kuosmanen, Niina; Väliranta, Minna; Goring, Simon; Korpela, Mikko; Kylander, Malin; Philip, Annemarie; Plikk, Anna; Renssen, Hans; Luoto, Miska (Journal article; Peer reviewed, 2018)
      The Eemian (the Last Interglacial; ca. 129–116 thousand years ago) presents a testbed for assessing environmental responses and climate feedbacks under warmer-than-present boundary conditions. However, climate syntheses ...
    • Improved Models for Predicting Bubble Velocity, Bubble Frequency and Bed Expansion in a Bubbling Fluidized Bed 

      Agu, Cornelius Emeka; Tokheim, Lars-Andre; Eikeland, Marianne Sørflaten; Moldestad, Britt Margrethe Emilie (Journal article; Peer reviewed, 2018)
      An efficient design and operational control of a fluidized bed reactor relies on accurate prediction of bubble properties. This paper employs measurement of bed void fraction in determining the bubble velocity in a given ...
    • Experimental and Computational Study of Oxygen Carriers in Chemical Looping Combustion 

      Thapa, Rajan K.; Wijeratne, D. I. Erandi N.; Moldestad, Britt M.E. (Journal article; Peer reviewed, 2018)
      In this paper, the fluidization properties of possible oxygen carriers in Chemical Looping Combustion (CLC) have been studied. Experiments were performed in a cold fluidized bed to study fluidization properties of particles ...
    • Screening of Kinetic Rate Equations for Gasification Simulation Models (opptrykk) 

      Solli, KjellArne; Thapa, Rajan Kumar; Moldestad, Britt Margrethe Emilie (Journal article; Peer reviewed, 2018)
      The energy from biomass can be utilized through the thermochemical conversion process of pyrolysis and gasification. The process involves solid phase and fluid phase interactions. Computational Particle Fluid Dynamics ...
    • Distribution of Solids in a Fluidized Bed Operated without a Gas Distributor 

      Agu, Cornelius Emeka; Moldestad, Britt M.E. (Journal article; Peer reviewed, 2018)
      Despite several advantages of a gas distributor, there are also some challenges in its application. Using a gas distributor increases the fluidizing gas compression cost. Due to deposition of fine particles and product of ...
    • Improving bench scale design for polymerisation of green CO2-polymers 

      Larsen, Thomas S.; Sætre, Kai A.; Ronasi, Sara; Haugen, Hildegunn H.; Moldestad, Britt M.E. (Journal article; Peer reviewed, 2018)
      Plastic has become the most common material since the beginning of the 20th century and has become almost indispensable due to its durability, light weight and low costs. However, some of the characteristics also make the ...
    • Study of fluidized bed regimes using Computational Particle Fluid Dynamics 

      Jaiswal, Rajan; Agu, Cornelius E.; Thapa, Rajan K.; Moldestad, Britt M.E. (Journal article; Peer reviewed, 2018)
      The fluidization technology has a wide range of applications. In chemical synthesis, fluidized bed is used to enhance heat and mass transfer between the reacting species. More application of this technology can also be ...
    • Sensitivity Analysis and Effect of Simulation parameters of CPFD Simulation in Fluidized Beds 

      Bandara, Janitha; Nielsen, Henrik Kofoed; Moldestad, Britt Margrethe Emilie; Eikeland, Marianne Sørflaten (Journal article; Peer reviewed, 2018)
      Fluidized bed technology is broadly applied in industry due to its distinct advantages. CFD simulation of fluidized beds is still challenging compared to single-phase systems and needs extensive validation. Multiphase ...
    • Simulation of Condensation in Compressed Raw Biogas Using Aspen HYSYS 

      Øi, Lars Erik; Hovland, Jon (Journal article; Peer reviewed, 2018)
      Raw biogas typically contains 60 % methane, 40 % CO2, small amounts of other components and is saturated with water. It is a question whether raw biogas can be compressed to high pressures without condensation. The aim of ...
    • Comparison of Linear Controllers for Nonlinear, Open-loop Unstable Reactor 

      Khalili, Mohammad; Lie, Bernt (Journal article; Peer reviewed, 2018)
      Many industrially important reactors are operated over a regime where they exhibit nonlinear behavior. Exothermal reactors are often open-loop unstable. For such reactors, safe operation with good performance requires good ...
    • Experimental and Computational study of Chemical Looping Combustion 

      Thapa, Rajan K.; Wijeratne, D. I. Erandi N.; Moldestad, Britt M.E. (Journal article; Peer reviewed, 2018)
      In this paper, the fluidization properties of possible oxygen carriers in Chemical Looping Combustion (CLC) have been studied. Experiments were performed in a cold fluidized bed to study fluidization properties of particles ...
    • J/psi Elliptic Flow in Pb-Pb Collisions at root s(NN)=2.76 TeV 

      Alme, Johan; Erdal, Hege Austrheim; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Altinpinar, Sedat; Djuvsland, Øystein; Fehlker, Dominik; Haaland, Øystein Senneset; Huang, Meidana; Langøy, Rune; Lien, Jørgen; Lønne, Per-Ivar; Nystrand, Joakim; Rehman, Attiq ur; Røed, Ketil; Røhrich, Dieter; Skjerdal, Kyrre; Ullaland, Kjetil; Wagner, Boris; Yang, Shiming; Bätzing, Paul Christoph; Dordic, Olja; Eyyubova, Gyulnara; Kværnø, Henning; Lindal, Svein; Løvhøiden, Gunnar; Milosevic, Jovan; Nilsson, Mads Stormo; Qvigstad, Henrik; Richter, Matthias; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Abbas, Eham Gamal; Abelev, Betty; Adam, Jaroslav; Adamová, Dagmar; Adare, Andrew Marshall; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agocs, Andreas Gabor; Agostinelli, Andrea; Ahammed, Zubayer; Ahmad, Nazeer; Ahmad Masoodi, Arshar; Ahn, Sang Un; Ajaz, Muhammad; Aleksandrov, Dimitry; Alessandro, Bruno; ALICE, Collaboration (Journal article; Peer reviewed, 2013)
      We report on the first measurement of inclusive J/ψ elliptic flow v2 in heavy-ion collisions at the LHC. The measurement is performed with the ALICE detector in Pb-Pb collisions at √sNN = 2.76  TeV in the rapidity range ...
    • Modeling and Analysis of Fluid Flow through A Non-Prismatic Open Channel with Application to Drilling 

      Jinasena, Asanthi; Ghaderi, Ali; Sharma, Roshan (Journal article; Peer reviewed, 2018)
      This paper presents the development and validation of a simplified dynamic model of a Venturi channel. The existing dynamic models on open channels are based on the open channel flow principles, which are the shallow water ...
    • Study of fluidized bed regimes using Computational Particle Fluid Dynamics 

      Jaiswal, Rajan; Agu, Cornelius E.; Thapa, Rajan K.; Moldestad, Britt M.E. (Journal article; Peer reviewed, 2018)
      The fluidization technology has a wide range of applications. In chemical synthesis, fluidized bed is used to enhance heat and mass transfer between the reacting species. More application of this technology can also be ...
    • Electrophoretic deposition of graphene-based materials: A review of materials and their applications 

      Ma, Yifei; Han, Jiemin; Wang, Mei; Chen, Xuyuan; Jia, Suotang (Journal article; Peer reviewed, 2018)
      Recently, graphene-based materials have been successfully fabricated by the electrophoretic deposition (EPD) technique and exhibited various extraordinary properties. Here, research progress of the field of graphene-based ...
    • Continuous and real-time detection of drinking-water pathogens with a low-cost fluorescent optofluidic sensor 

      Simôes, Joâo; Dong, Tao (Journal article; Peer reviewed, 2018)
      Growing access to tap water and consequent expansion of water distribution systems has created numerous challenges to maintaining water quality between the treatment node and final consumer. Despite all efforts to develop ...
    • Core-shell coaxially structured triboelectric nanogenerator for energy harvesting and motion sensing 

      Tian, Zhumei; He, Jian; Chen, Xi; Wen, Tao; Zhai, Cong; Zhang, Zengxing; Cho, Jundong; Chou, Xiujian; Xue, Chenyang (Journal article; Peer reviewed, 2018)
      Converting sustainable human motion energy into electric energy has become an urgent task for the advancement of next-generation wearable and portable electronics. Herein, a core–shell coaxially structured triboelectric ...
    • Flexible one-structure arched triboelectric nanogenerator based on common electrode for high efficiency energy harvesting and self-powered motion sensing 

      Chen, Xi; He, Jian; Song, Linlin; Zhang, Zengxing; Tian, Zhumei; Wen, Tao; Zhai, Cong; Chen, Yi; Cho, Jundong; Chou, Xiujian; Xue, Chenyang (Journal article; Peer reviewed, 2018)
      Abstract Triboelectric nanogenerators are widely used because of low cost, simple manufacturing process and high output performance. In this work, a flexible one-structure arched triboelectric nanogenerator (FOAT), based ...
    • Design-driven innovation in design practice. The case of designing a ship-bridge vision 

      Kristiansen, Helge Tor; Gausdal, Anne Haugen (Journal article; Peer reviewed, 2018)
      The aim of this paper is to investigate Verganti’s framework for design-driven innovation (DDI) in the context of design practice and to discuss, elaborate and deepen the understanding of DDI, especially on aspects related ...
    • 3D Maps of Mineral Composition and Hydroxyapatite Orientation in Fossil Bone Samples Obtained by X-ray Diffraction Computed Tomography 

      Mürer, Fredrik Kristoffer; Sanchez, Sophie; Alvarez-Murga, Michelle; Di Michiel, Marco; Pfeiffer, Franz; Bech, Martin; Breiby, Dag Werner (Journal article; Peer reviewed, 2018)
      Whether hydroxyapatite (HA) orientation in fossilised bone samples can be non-destructively retrieved and used to determine the arrangement of the bone matrix and the location of muscle attachments (entheses), is a question ...