Search for dissertations about: "wake"

Showing result 1 - 5 of 190 swedish dissertations containing the word wake.

  1. 1. Analysis of the Base Wake on Passenger Vehicles

    Author : Lennert Sterken; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Pressure measurements; External aerodynamics; Wind tunnel; Wake; Local drag; CFD;

    Abstract : Car manufacturers are presented by a continuous increase in fuel prices and by ever more strict legislations regarding CO2-emissions. Decreasing the driving resistance and hence the fuel consumption of their vehicles helps to improvetheir market share. READ MORE

  2. 2. Wind Tunnel Studies of Turbulent Wakes

    Author : Murat Tutkun; [2006]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; surface visualization; wind tunnel; two-point correlation; proper orthogonal decomposition; pod; bump; wake; axisymmetric wake; hot-wire anemometry; separation; turbulence;

    Abstract : .... READ MORE

  3. 3. Birds in the Flow: Flight Mechanics, Wake Dynamics and Flight Performance

    University dissertation from Mikael Rosén, Ecology Building, SE-223 62 Lund, Sweden

    Author : Mikael Rosén; Lunds universitet.; Lund University.; [2003]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Djurekologi; Animal ecology; Eleonora s falcon.; hunting; optimum wingspan; tail posture; wingbeat kinematics; wake topology; DPIV; flight performance; wake dynamics; flight mechanics; wind tunnel; Flight; bird;

    Abstract : Popular Abstract in Swedish Fåglars flygförmåga I alla tider har vi fascinerats av fåglars förmåga att flyga, och många försök att förstå och efterlikna dem har gjorts. Kanske den förste som på allvar intresserade sig för mekanismerna bakom fåglars flykt var Leonardo da Vinci som runt år 1500 funderade på hur fåglar alstrar lyftkraft. READ MORE

  4. 4. Numerical computations of wind turbine wakes and wake interaction Optimization and control

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Karl Nilsson; KTH.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Actuator disc method; Actuator line method; Blade element momentum method; Wind turbine wake; Wake interaction; CFD; LES; EllipSys3D;

    Abstract : In the present thesis the wake flow behind wind turbines is analyzed numerically using large-eddy simulations. The wind turbine rotors are modeled by using either the actuator disc method or the actuator line method in which the blades are represented by body forces computed with airfoil data. READ MORE

  5. 5. Wind power wake modelling Development and application of an actuator disc method for industrial utilization

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Nikolaos Simisiroglou; Uppsala universitet.; [2018]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Wind power; Offshore wind farm; Wakes; Actuator Disc Method ACD ; Computational Fluid Dynamics CFD ; Reynolds Average Navier–Stokes RANS ; WindSim; PHOENICS;

    Abstract : As a wind turbine extracts energy from the wind it creates a region downstream where the wind velocity is decreased and the urbulence intensity is increased, this region is commonly called the wake region. Today’s wind farms include a large number of wind turbines position in tight layouts. READ MORE