Blar i NTNU Open på forfatter "Sætran, Lars Roar"

Viser treff 21-30 av 30

    • The effect of the number of blades on wind turbine wake – a comparison between 2-and 3-bladed rotors 

      Mühle, Franz; Adaramola, Muyiwa S.; Sætran, Lars Roar (Journal article; Peer reviewed, 2016)
      Due to cost benefit and weight reduction, 2-bladed wind turbines have the potential to become more important for offshore wind applications. In order to optimize the arrangement of wind turbines in wind farms and for ...

    • Urban wind at the Gløshaugen campus 

      Røstum, Simen Havneraas (Master thesis, 2019)
      En modell av Gløshaugen campus skalert 1: 320 ble opprettet for å evaluere vindforholdene på Gløshaugen for å utvikle og validere en numerisk modell. For å undersøke vindforholdene ble det brukt røyk og korn for visualisering ...

    • Validation of the real-time-response ProCap measurement system for full field wake scans behind a yawed model-scale wind turbine 

      Bartl, Jan Michael Simon; Müller, Andreas; Landolt, Andrin; Mühle, Franz Volker; Vatn, Mari; Oggiano, Luca; Sætran, Lars Roar (Journal article; Peer reviewed, 2018)
      For an accurate prediction of the complex flow conditions in wind farms, model scale wake flow measurements represent important references in well-defined boundary conditions. State-of-the art flow measurement techniques ...

    • Vertical Wind Profiles in Non-Neutral Conditions: Comparison of Models and Measurements From Frøya 

      Domagalki, Piotr; Bardal, Lars Morten; Sætran, Lars Roar (Journal article; Peer reviewed, 2018)
      This paper presents an analysis of stratification dependent mean velocity profiles measured in a Norwegian coastal wind climate, and its comparison with models available in the literature. For this purpose we use 3 years ...

    • Vortex interaction in the wake of a two- and three-bladed wind turbine 

      Bartl, Jan Michael Simon; Hansen, Thomas; Kuhn, Wolf Ludwig; Mühle, Franz Volker; Sætran, Lars Roar (Peer reviewed; Journal article, 2020)
      The vortex interaction in the wake behind a two- and three-bladed model scale wind turbine is investigated. The two rotors have equal solidity, and produce similar power and thrust at the design tip speed ratio. Phase-averaged ...

    • Wind in Complex Terrain - Lidar Measurements for Evaluation of CFD Simulations 

      Risan, Andrea; Lund, John Amund; Chang, Chi-Yao; Sætran, Lars Roar (Journal article; Peer reviewed, 2018)
      Computational Fluid Dynamics (CFD) is widely used to predict wind conditions for wind energy production purposes. However, as wind power development expands into areas of even more complex terrain and challenging flow ...

    • Wind tunnel experiments on wind turbine wakes in yaw: effects of inflow turbulence and shear 

      Bartl, Jan Michael Simon; Mühle, Franz Volker; Schottler, Jannik; Sætran, Lars Roar; Peinke, Joachim; Adaramola, Muyiwa S.; Holling, Micheal (Journal article; Peer reviewed, 2018)
      The wake characteristics behind a yawed model wind turbine exposed to different customized inflow conditions are investigated. Laser Doppler anemometry is used to measure the wake flow in two planes at x∕D = 3 and x∕D = 6, ...

    • Wind tunnel experiments on wind turbine wakes in yaw: redefining the wake width 

      Schottler, Jannik; Bartl, Jan Michael Simon; Mühle, Franz Volker; Sætran, Lars Roar; Peinke, Joachim; Hölling, Michael (Journal article; Peer reviewed, 2018)
      This paper presents an investigation of wakes behind model wind turbines, including cases of yaw misalignment. Two different turbines were used and their wakes are compared, isolating effects of boundary conditions and ...

    • Wind tunnel investigation on the effect on the turbine tower on wind turbines wake symmetry 

      Pierella, F; Sætran, Lars Roar (Journal article; Peer reviewed, 2017)
      In wind farms, the wake of the upstream turbines becomes the inflow for the downstream machines. Ideally, the turbine wake is a stable vortex system. In reality, because of factors like background turbulence, mean flow ...

    • Wind tunnel study on power output and yaw moments for two yaw-controlled model wind turbines 

      Bartl, Jan Michael Simon; Mühle, Franz Volker; Sætran, Lars Roar (Journal article; Peer reviewed, 2018)
      In this experimental wind tunnel study the effects of intentional yaw misalignment on the power production and loads of a downstream turbine are investigated for full and partial wake overlap. Power, thrust force and yaw ...