Sökning: "boundary layer"

Visar resultat 1 - 5 av 387 avhandlingar innehållade orden boundary layer.

  1. 1. Boundary Layer : Approximate Approximations and Cubature of Potentials in Domains

    Detta är en avhandling från Linköping : Linköping university

    Författare :Tjavdar Ivanov; [1995]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  2. 2. Experimental study on turbulent boundary-layer flows with wall transpiration

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Marco Ferro; KTH.; KTH.; [2017]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbulent boundary layer; boundary-layer suction; boundary-layer blowing; wall-bounded turbulent flows; self-sustained turbulence; Teknisk mekanik; Engineering Mechanics;

    Sammanfattning : Wall transpiration, in the form of wall-normal suction or blowing through a permeable wall, is a relatively simple and effective technique to control the behaviour of a boundary layer. For its potential applications for laminar-turbulent transition and separation delay (suction) or for turbulent drag reduction and thermal protection (blowing), wall transpiration has over the past decades been the topic of a significant amount of studies. LÄS MER

  3. 3. Optimisation and control of boundary layer flows

    Detta är en avhandling från Stockholm : KTH

    Författare :Antonios Monokrousos; KTH.; [2009]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; boundary layer; control; estimation; optimal disturbances; Lagrange method; TECHNOLOGY Engineering mechanics; TEKNIKVETENSKAP Teknisk mekanik;

    Sammanfattning : Both optimal disturbances and optimal control are studied by means of numerical simulations for the case of the flat-plate boundary-layer flow. The optimisation method is the Lagrange multiplier technique where the objective function is the kinetic energy of the flow perturbations and the constraints involve the linearised Navier–Stokes equations. LÄS MER

  4. 4. On the Arctic Boundary Layer From Turbulence to Climate

    Detta är en avhandling från Stockholm : Meteorologiska institutionen (MISU)

    Författare :Thorsten Mauritsen; Stockholms universitet.; [2007]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Atmospheric boundary layers; Turbulence; Stable stratification; Gravity waves; Mesoscale motion; Arctic climate; NATURAL SCIENCES Earth sciences Atmosphere and hydrosphere sciences Meteorology; NATURVETENSKAP Geovetenskap Atmosfärs- och hydrosfärsvetenskap Meteorologi; atmosfärvetenskap; Atmospheric Sciences;

    Sammanfattning : The boundary layer is the part of the atmosphere that is in direct contact with the ground via turbulent motion. At mid-latitudes the boundary layer is usually one or a few kilometers deep, while in the Arctic it is much more shallow, typically a few hundred meters or less. LÄS MER

  5. 5. Optimal Control of Boundary Layer Transition

    Detta är en avhandling från Stockholm : Mekanik

    Författare :Markus Högberg; KTH.; [2001]
    Nyckelord :laminar-turbulent transition; transition control; turbulence control; flow control; boundary layer flow; channel flow; optimal control; adjoint equations; Riccati equations; Orr--Sommerfeld--Squire equations; secondary instability; transient gro;

    Sammanfattning : .... LÄS MER