Blar i NTNU Open på forfatter "Bracchi, Tania"

Viser treff 21-32 av 32

    • Performance and wake measurements of a Savonius wind turbine 

      Jessen, Marius Stette; Aliferis, Alexander Dahl (Master thesis, 2018)
      In this study, the performance, drag and wake characteristics of a vertical axis Savonius wind turbine are investigated experimentally. The turbine is drag driven and has a helical configuration, making the top rotated 180 ...

    • Performance and wake of a Savonius vertical‐axis wind turbine under different incoming conditions 

      Aliferis, Alexander D; Jessen, Marius Stette; Bracchi, Tania; Hearst, R. Jason (Journal article; Peer reviewed, 2019)
      In this study, the performance, drag, and horizontal midplane wake characteristics of a vertical‐axis Savonius wind turbine are investigated experimentally. The turbine is drag driven and has a helical configuration, with ...

    • Performance of the NREL S826 airfoil at low to moderate Reynolds numbers — A reference experiment for CFD models 

      Bartl, Jan Michael Simon; Sagmo, Kristian Forfot; Bracchi, Tania; Sætran, Lars Roar (Journal article; Peer reviewed, 2019)
      Lift, drag and surface pressure measurements are performed on a wing section of the NREL S826 wind turbine airfoil at eight Reynolds numbers ranging from 0:5_105 to 6:0_105. Alongside with the measurements two types of ...

    • Spatial development of a turbulent boundary layer subjected to freestream turbulence 

      Jooss, Yannick; Li, Leon; Bracchi, Tania; Hearst, Robert Jason (Peer reviewed; Journal article, 2021)
      The spatial development of a turbulent boundary layer (TBL) subjected to freestream turbulence (FST) is investigated experimentally in a water channel for friction Reynolds numbers up to Reτ=5060. Four different FST ...

    • Taking the Motion out of Floating Lidar: Turbulence Intensity Estimates with a Continuous-Wave Wind Lidar 

      Kelberlau, Felix; Neshaug, Vegar; Lønseth, Lasse; Bracchi, Tania; Mann, Jakob (Peer reviewed; Journal article, 2020)
      Due to their motion, floating wind lidars overestimate turbulence intensity ( TI ) compared to fixed lidars. We show how the motion of a floating continuous-wave velocity–azimuth display (VAD) scanning lidar in all six ...

    • The effect of active grid turbulence on the wingtip vortices and performance of a NACA-4412 

      Dehareng, Simon (Master thesis, 2023)
      The impact of freestream turbulence (FST) generated by an active turbulence grid (ATG) on the aerodynamic performance and behavior of a wingtip vortex in the near wake of a NACA-4412 airfoil was investigated using various ...

    • The Effect of Arm Positions on Flow Around an Alpine Skier 

      Støre, Jonas Østergaard (Master thesis, 2021)
      There have been limited research increasing knowledge of flow around an alpine skier, and the effect of different arm positions. In this study, a wind tunnel experiment were conducted testing five different arm positions ...

    • The handover process of power plants and the PfO project of TrønderEnergi 

      Hanger, Lene Malvik; Harms, Albert Bråten; Hillestad, Mirabai (Bachelor thesis, 2020)
      Utvidelsen av vindenergi i TrønderEnergi krever grundig planlegging. TrønderEnergi har derfor opprettet prosjektet TrønderEnergi READY som skal foreberede bedriften på ansvaret som kommer med overtakelser av vindparker, ...

    • Tilstandsanalyse av vindturbiner ved bruk av SCADA data 

      Khoja, Babi; Standal, David (Bachelor thesis, 2023)
      Vindenergi er og fortsetter å være en essensiell del av kraftproduksjon globalt sett, og derfor er det viktig å redusere nedetid og vedlikeholdskostnader i vindparker. Kunnskap om årsakene til feil i en vind turbin hjelper ...

    • Tool development for LCOE calculation for floating offshore wind 

      Sølvik, Marie; Nergård, Bertine; Ramstad, Marthe Cathrine (Bachelor thesis, 2022)
      Lønnsomhet er viktig for å insentivere utviklingen av fornybar energiprosjekter. Flytende havvind er fortsatt i en begynnende fase, men forventes å gå inn i det grønne markedet med industriell og økonomisk styrke. Utjevnet ...

    • Urban wind: CFD analysis of Gløshaugen campus based on measured data 

      Burkeland, Stian Næve (Master thesis, 2018)
      In this study, a CFD analysis of the wind condition at the Norwegian University of Science and Technology based on local measurements is conducted of inlet wind profiles. The simulation is performed on Abel computer cluster, ...

    • Wind field measurements in urban environments 

      Krohg, Petter Nicolai (Master thesis, 2021)
      Ettersom verden streber etter å senke klima utslipp og forurensing blir fokuset mer og mer rettet mot fornybar energiproduksjon. Kan vind produksjon i urbane miljøer bidra til å senke både lokale og globale utslipp. Et ...