Essays about: "Turbulensintensitet"

Showing result 1 - 5 of 6 essays containing the word Turbulensintensitet.

  1. 1. Turbulence Intensity Measurements in a High-Pressure Gas Turbine Stage

    University essay from KTH/Kraft- och värmeteknologi

    Author : Ettore Scami; [2022]
    Keywords : Turbulence Intensity; turbine; stage efficiency; grid; turbomachinery; length scales;

    Abstract : This Thesis work focused on the acquisition and evaluation of data on mean velocity, turbulence intensity and length scales obtained via hot wire measurements in a high pressure single-stage land-based turbine available at the Department of Heat and Power Technology in KTH. Turbulence was generated by the use of grids and twoprobes, upstream and downstream of the turbine stage, were used. READ MORE

  3. 2. Turbulence Intensity During Low-Level Jets in the Baltic Sea

    University essay from Uppsala universitet/Luft-, vatten- och landskapslära

    Author : Thomasson August; [2021]
    Keywords : Low-Level Jet; Turbulence intensity; Shear sheltering; LiDAR; Baltic Sea; Low-Level Jet; Turbulensintesitet; Shear sheltering; LiDAR; Östersjön;

    Abstract : Low-level jets (LLJs) are local wind speed maximums in the atmospheric boundary layer. In the Baltic Sea, LLJs are frequently occurring in spring and summer. It is an important phenomena to consider for wind energy parks, and changes in turbulence during the jets can effect the efficiency of said parks. READ MORE

  4. 3. The impact of wind conditions on wind turbines

    University essay from KTH/Energiteknik

    Author : Lovisa Eriksson Petersen; [2016]
    Keywords : ;

    Abstract : The world is facing global warming and the challenge to reduce greenhouse gas emissions. Wind power is a renewable source of energy with no greenhouse gas emissions when operating. Therefore, it could contribute in this challenge. READ MORE

  5. 4. A stochastic analysis of Turbulence Intensity influence over various sizes of HAWT : Study of hypothetical relationship between Rotor Diameter and influence level of Turbulence Intensity

    University essay from Högskolan i Halmstad/Energivetenskap

    Author : Allen Christo Nicholas; [2016]
    Keywords : Turbulence intensity; power performance; power deviation; power coefficient; tip speed ratio.; Turbulensintensitet; effektuttag; effektavvikelse; verkningsgrad; löptal;

    Abstract : This disquisition aims for the study of turbulence intensity influence over the power performance of different sizes of turbines with the intent to validate a hypothesis. The hypothesis formulated for the analysis is the relationship between the rotor diameter (turbine size) and turbulence intensity. READ MORE

  6. 5. Turbulence Intensity in Complex Environments and its Influence on Small Wind Turbines

    University essay from Uppsala universitet/Luft-, vatten- och landskapslära

    Author : Nicole Carpman; [2011]
    Keywords : turbulence intensity; complex; uniform; small wind turbines; IEC standard classes; normal turbulence model; turbulensintensitet; komplex; homogen; urban; små vindkraftverk; IEC standard klasser; normal turbulensmodell;

    Abstract : The market of wind power as a sustainable energy source is growing, both on large and small scale. Conventional large scale wind turbines normally operate in uniform areas where expected wind speeds and turbulence characteristics are well investigated and the constructional design of the wind turbines is regulated by standard classes for different external conditions. READ MORE