Search for dissertations about: "transition prediction"

Showing result 1 - 5 of 117 swedish dissertations containing the words transition prediction.

  2. 1. Stability analysis and transition prediction of wall-bounded flows

    Author : Ori Levin; KTH; []
    Keywords : Boundary layer; wall jet; algebraic growth; exponential growth; lift-up effect; streamwise streaks; Tollmien-Schlichting waves; free-stream turbulence; roughness element; transition prediction; Parabolized Stability Equations; Direct Numerical S;

    Abstract : Disturbances introduced in wall-bounded .ows can grow andlead to transition from laminar to turbulent .ow. In order toreduce losses or enhance mixing in energy systems, afundamental understanding of the . READ MORE

  4. 2. Psychology of Sport Injury : Prediction, Prevention and Rehabilitation in Swedish Team Sport Athletes

    Author : Andreas Ivarsson; Urban Johnson; Judy van Raalte; Linnéuniversitetet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Athletic injury; prediction; prevention; psychology; rehabilitation;

    Abstract : The dissertation consists of five separate studies that all have focused on different aspects of the relationship between psychological factors and sport injuries.In the first study the aim was to investigate female elite soccer players’ experiences of the time prior to the occurrence of an ACL injury. READ MORE

  5. 3. Numerical studies of transtion in wall-bounded flows

    Author : Ori Levin; Dan Henningson; Nikolaus Adams; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; boundary layer; suction; wall jet; streaks; waves; periodic disturbance; localized disturbance; turbulent spot; algebraic growth; exponential growth; stability; transition thresholds; transition prediction; PSE; DNS; Fluid mechanics; Strömningsmekanik;

    Abstract : Disturbances introduced in wall-bounded flows can grow and lead to transition from laminar to turbulent flow. In order to reduce losses or enhance mixing in energy systems, a fundamental understanding of the flow stability and transition mechanism is important. READ MORE

  6. 4. Numerical prediction of propeller induced hull pressure pulses and noise

    Author : Muye Ge; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; RANS; Transition; IDDES; Cavitation; Pressure pulses; Sheet cavitation inception; Ship noise; k − ω SST; FWH acoustic analogy; Hydroacoustics;

    Abstract : An operating marine propeller is one of the major sources inducing hull pressure pulses, onboard noise and vibration as well as underwater radiated noise. There are rising concerns of environmental impacts and comfort and welfare of passengers and crews due to these negative effects. READ MORE

  7. 5. Prediction of Wing Section Lift and Drag from Numerical Solutions of the Navier-Stokes Equations

    Author : Björn Regnström; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; airfoil; incompresible flow; computational fluid dynamics; transition; numerical analysis; boundary layer stability;

    Abstract : A Navier-Stokes finite difference method is developed and applied to two-dimensional, incompressible, viscous flow around wing sections at medium to high Reynolds numbers. An important feature of such flows is laminar boundary layers with spatially amplified Tollmien-Schlichting waves initiating transition to turbulence. READ MORE