• Virtual element method for geomechanical simulations of reservoir models 

      Andersen, Odd; Nilsen, Halvor Møll; Raynaud, Xavier (Journal article; Peer reviewed, 2017)
      In this paper, we study the use of virtual element method (VEM) for geomechanics. Our emphasis is on applications to reservoir simulations. The physical processes behind the formation of the reservoirs, such as sedimentation, ...
    • Virtual Friction Control for Power System Oscillation Damping with VSC-HVDC Links 

      Rodriguez-Cabero, Alberto; Roldan-Pérez, Javier; Prodanovic, Milan; Suul, Jon Are Wold; D'Arco, Salvatore (Chapter; Peer reviewed, 2019)
      This paper presents a technique for damping of oscillations in ac grids by control of VSC-HVDC links. The effect of the proposed controller is equivalent to a mechanical friction between two asynchronous networks (modelled ...
    • Virtual Friction Control for Power System Oscillation Damping with VSC-HVDC Links 

      Rodriguez-Cabero, Alberto; Roldan-Pérez, Javier; Prodanovic, Milan; Suul, Jon Are Wold; D'Arco, Salvatore (Chapter; Peer reviewed, 2019)
      This paper presents a technique for damping of oscillations in ac grids by control of VSC-HVDC links. The effect of the proposed controller is equivalent to a mechanical friction between two asynchronous networks (modelled ...
    • Virtual Friction for Oscillation Damping and Inertia Sharing from Multi-Terminal VSC-HVDC Grids 

      Rodriguez-Cabero, Alberto; Roldan-Pérez, Javier; Prodanovic, Milan; Suul, Jon Are Wold; D'Arco, Salvatore (Chapter; Peer reviewed, 2020)
      This paper proposes a control scheme for multi-terminal HVDC (MTDC) interconnections that introduces an effect equivalent to a mechanical coupling between asynchronous ac networks providing damping of frequency oscillations ...
    • Virtual IDP library 

      Rozanska, Magdalena; Belleri, Annamaria; Lollini, Roberto; Lam-Nang, Francesca; Gutierrez, Javier Antolín; Haase, Matthias; De Ferrari, Antonio; Grabowiecki, Krzysztof (CommONEnergy;, Research report, 2017)
    • Virtual Impedance Design for Power Quality and Harmonic Sharing Improvement in Microgrids 

      Göthner, Fredrik T. B. W.; Midtgård, Ole-Morten; Torres Olguin, Raymundo E.; Roldan-Pérez, Javier (Chapter; Peer reviewed, 2019)
      One of the main challenges of decentrally operated islanded microgrids has been proper harmonic sharing for parallel connected inverters. This is largely affected by differences in the feeder impedances of the inverters. ...
    • Virtual modelling and testing of the single and ontra-rotating co-axial propeller 

      Panjwani, Balram; Quinsard, Cecile; Przemysław, Dominik Gacia; Furseth, Jostein (Peer reviewed; Journal article, 2020)
      Propellers are a vital component to achieve successful and reliable operation of drones. However, the drone developer faces many challenges while selecting a propeller and a common approach is to perform static thrust ...
    • Virtual Proof of Concept - Can large scale bubble curtains lower the surface temperature ocean waters 

      Skjetne, Paal; Slagstad, Dag (Research report, 2021)
      Computer simulations were used to investigate the potential of large-scale bubble curtains for lowering the sea surface temperature locally and regionally. Large scale simulations of this type have not been reported in the ...
    • Virtual Prototyping of Maritime Systems and Operations: Applications of Distributed Co-Simulations 

      Skjong, Stian; Rindarøy, Martin; Kyllingstad, Lars Tandle; Æsøy, Vilmar; Pedersen, Eilif (Journal article; Peer reviewed, 2017-12-08)
      In this work, we demonstrate the use of co-simulation technology in the maritime industry through four relevant examples of applications based on the outcome of the knowledge-building project Virtual Prototyping of Maritime ...
    • Virtual Reality for Prototyping Service Journeys 

      Boletsis, Costas (Journal article; Peer reviewed, 2018)
      The use of virtual elements for developing new service prototyping environments and more realistic simulations has been suggested as a way to optimise the service prototyping process. This work examines the application of ...
    • The Virtual Sensei: Using Assisted Reality to Digitalize Gemba Walks 

      Powell, Daryl John (Chapter, 2022)
      As more and more companies adopt lean management as a system to continuously develop people, leaders are increasingly intent on conducting gemba walks. This means going to the workplace, be it production, engineering, or ...
    • Virtual sensors for erroneous data repair in manufacturing a machine learning pipeline 

      Sen, Sagar; Husom, Erik Johannes; Goknil, Arda; Politaki, Dimitra; Tverdal, Simeon; Nguyen, Phu Hong; Jourdan, Nicolas (Peer reviewed; Journal article, 2023)
      Manufacturing converts raw materials into finished products using machine tools for controlled material removal or deposition. It can be observed using sensors installed within and around machine tools. These sensors measure ...
    • Virtual Synchronous Machine Control of VSC HVDC for Power System Oscillation Damping 

      Roldan-Pérez, Javier; Suul, Jon Are Wold; D'Arco, Salvatore; Rodriguez-Cabero, Alberto; Prodanovic, Milan (Chapter; Peer reviewed, 2018)
      Two different methods for implementing inertial damping on a Virtual Synchronous Machine (VSM) and their potential for attenuating power system oscillations when utilized in a VSC HVDC terminal are investigated in this ...
    • A Virtual Synchronous Machine-based Control for Eliminating DC-side Power Oscillations of Three-Phase VSCs under Unbalanced Grid Voltages 

      Avdiaj, Eros; Suul, Jon Are Wold; D'Arco, Salvatore; Piegari, Luigi (Chapter; Peer reviewed, 2021)
      This paper presents a Virtual Synchronous Machine (VSM)-based control method for avoiding dc-side power oscillations in grid connected voltage source converters (VSCs) when operating under under unbalanced conditions. The ...
    • Virtualization of food supply chains with the internet of things 

      Verdouw, Cor N.; Wolfert, Sjaak; Beulens, Adrie .J.M; Rialland, Agathe Isabelle (Volume 176;, Journal article, 2015)
      Internet technologies allow supply chains using virtualizations dynamically in operational management processes. This will improve support for food companies in dealing with perishable products, unpredictable supply ...
    • Viscoelastic flow simulations in disordered porous media 

      De, S.; Kuipers, J.A.M.; Peters, E.A.J.F. (SINTEF Proceedings;2, Chapter; Conference object; Peer reviewed, 2017)
      We investigate creeping flow of a viscoelastic fluid through a three dimensional random porous medium using computational fluid dynamics. The simulations are performed using a finite volume methodology with a staggered ...
    • Viscoelastic Properties of Cells: Modeling and Identification by Atomic Force Microscopy 

      Ragazzon, Michael Remo Palmén; Gravdahl, Jan Tommy; Vagia, Marialena (Journal article; Peer reviewed, 2017)
      Identification of mechanical properties of cells has previously been shown to have a great potential and effectiveness on medical diagnosis. As a result, it has gathered increasing interest of researchers over the recent ...
    • Viscosity Models for Drilling Fluids: Herschel-Bulkley Parameters and Their Use 

      Saasen, Arild; Ytrehus, Jan David (Peer reviewed; Journal article, 2020)
      An evaluation is presented of the practical usage of the Herschel-Bulkley viscosity model for drilling fluids. If data from automatic viscosity measurements exist, the parameters should be selected from relevant shear rate ...
    • Vision transformer and explainable transfer learning models for auto detection of kidney cyst, stone and tumor from CT-radiography 

      Islam, Md Nazmul; Hasan, Mehedi; Hossain, Md Kabir; Alam, Md Golam Rabiul; Uddin, Md Zia; Soylu, Ahmet (Peer reviewed; Journal article, 2022)
      Renal failure, a public health concern, and the scarcity of nephrologists around the globe have necessitated the development of an AI-based system to auto-diagnose kidney diseases. This research deals with the three major ...
    • Vision-based pose estimation for autonomous operations in aquacultural fish farms 

      Schellewald, Christian; Stahl, Annette; Kelasidi, Eleni (Peer reviewed; Journal article, 2021)
      There is a largely increasing demand for the usage of Unmanned Underwater Vehicles (UUVs) including Remotely Operated Vehicles (ROVs) for underwater aquaculture operations thereby minimizing the risks for diving accidents ...