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Showing result 1 - 5 of 7 swedish dissertations matching the above criteria.

  2. 1. On stability, transition and turbulence in three-dimensional boundary-layer flows

    Author : Seyed Mohammd Hosseini; Ardeshir Hanifi; Spencer Sherwin; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Receptivity; stability; optimal growth; three-dimensional bound- ary layers; crossflow instability; roughness control; freestream turbulence; sec- ondary instability; transition; turbulence;

    Abstract : A lot has changed since that day on December 17, 1903 when the Wright brothers made the first powered manned flight. Even though the concepts behind flying are unaltered, appearance of stat-of-the-art modern aircrafts has undergone a massive evolution. READ MORE

  4. 2. Stability and transition of three-dimensional boundary layers

    Author : Seyed Mohammad Hosseini; Ardeshir Hanifi; Vassilios Theofilis; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Receptivity; stability; optimal growth; three-dimensional boundary layers; crossflow instability; roughness control; freestream turbulence; secondary instability;

    Abstract : A focus has been put on the stability characteristics of different flow types existing on air vehicles. Flow passing over wings and different junctions on an aircraft face numerous local features, ranging from different pressure gradients, to interacting boundary layers. READ MORE

  5. 3. Streak breakdown and transition control in wall-bounded flows

    Author : Fredrik Lundell; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fluid mechanics; active control; laminar-turbulent transition; freestream turbulence; Engineering mechanics; Teknisk mekanik; TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : .... READ MORE

  6. 4. Reynolds number and freestream turbulence effects on the flow and fluid forces for a circular cylinder in cross flow

    Author : Christoffer Norberg; Värmeöverföring; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : .... READ MORE

  7. 5. Laninar-turbulent boundary layer transition influenced by free stream turbulence

    Author : Jonas Westin; KTH; []
    Keywords : ;

    Abstract : Laminar-turbulent transition in a flat plate boundary layerhas been considered, with a special emphasis on the influencefrom free stream turbulence (FST)First, experiments on linear stability ofTollmien-Schlichting (TS) waves in a Blasius boundary layer wasstudied. This is a well-known example from hydrodynamicstability theory, which has hitherto suffered from unresolveddiscrepancies between experiments and linear theory. READ MORE