Sökning: "wind direction"

Visar resultat 16 - 20 av 216 uppsatser innehållade orden wind direction.

  1. 16. Wind power forecasting using random forests

    Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Christoffer Ahrling; [2023]
    Nyckelord :machine learning; wind power; forecasting; random forest; Technology and Engineering;

    Sammanfattning : The present thesis investigated using the random forest machine learning algorithm for wind power forecasting. Meteorological prognoses for wind speed, wind direction, gust winds, and humidity were used. For historical data, wind minimum and temperature was also included. LÄS MER

  3. 17. CFD Analyses for Wind Load AssessmentCFD Analyses for Wind Load Assessment : Wind-induced vibrations in the Bomarsunds Bridge hangers

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Fatiha El Azrak; [2023]
    Nyckelord :;

    Sammanfattning : The trend in recent years of building longer and slender bridge components has introduced new challenges to ensure their stability and strength. This master thesis focuses on the effects of wind-induced vibrations in the context of long, slender arch bridge components, particularly the recently constructed Bomarsunds Bridge in Åland, Finland. LÄS MER

  4. 18. Uncertainty quantification for offshore wind turbines

    Master-uppsats, KTH/Matematik (Avd.)

    Författare :Ziming Wang; [2022]
    Nyckelord :wind energy; uncertainty propagation; polynomial chaos; Rosenblatt transformation; quadrature; regression; vindenergi; osäkerhetsutbredning; polynomkaos; Rosenblatt transformation; kvadratur; regression;

    Sammanfattning : Wind energy is a field with a large number of uncertainties. The random nature of the weather conditions, including wind speed, wind direction, and turbulence intensity, influences the energy output and the structural safety of a wind farm, making its performance fluctuate and difficult to predict. LÄS MER

  5. 19. Elastisk dimensionering av vinkelstål med hänsyn till vridande moment : Elastic design of angle bar with consideration of torsional load.

    Uppsats för yrkesexamina på grundnivå, Mittuniversitetet/Institutionen för ekoteknik- och hållbart byggande

    Författare :Alexander Nilsson; [2022]
    Nyckelord :Angelbar • Elastic design • Torsinoal load; • Vinkelstång • Elastisk dimensionering • Vridande moment;

    Sammanfattning : Byggbranschen idag pressas hårt både när det kommer till tid och pengar. Därför har man i följande rapport fokuserat på att ta fram en metod som bygger på att förenkla uppförande av stålstommar med olika prefabricerade väggelement. LÄS MER

  7. 20. The Magnetic Properties and Fabrics of Upper Pleistocene Loess on La Motte, Jersey, and their Palaeoclimate Implications

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Anya Hawkins; [2022]
    Nyckelord :last glacial; magnetic susceptibility; AMS; temperature dependent magnetic susceptibility; palaeowind reconstruction;

    Sammanfattning : The island of Jersey is an interesting location for palaeoclimate reconstruction given the likely impact of variations in North Atlantic climate and European ice sheet extent during the last glacial period considering their proximal location. These last glacial climatic variations are recorded in the loess sequence from La Motte, Jersey and in order to reconstruct these changes, a detailed magnetic analysis was performed. LÄS MER