Sökning: "Receptivity"
Visar resultat 6 - 10 av 47 avhandlingar innehållade ordet Receptivity.
6. Study of generation, growth and breakdown of streamwise streaks in a Blasius boundary layer
Sammanfattning : Transition from laminar to turbulent flow has beentraditionally studied in terms of exponentially growingeigensolutions to the linearized disturbance equations.However, experimental findings show that transition may occuralso for parameters combinations such that these eigensolutionsare damped. LÄS MER
7. On stability, transition and turbulence in three-dimensional boundary-layer flows
Sammanfattning : 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. LÄS MER
8. Den enskilde : En studie av trons profana möjlighet i Sören Kierkegaards tidiga författarskap
Sammanfattning : In his attempt to explore philosophically human existence, Kierkegaard frequently refers to the term "the single individual" (den Enkelte), and he explicitly states that this notion plays a prominent part in his authorship. Even if he ascribes such a significant role to the single individual he never gives a comprehensive account of how to understand this notion. LÄS MER
9. Stability and transition of three-dimensional boundary layers
Sammanfattning : 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. LÄS MER
10. Receptivity of Boundary-Layer Flows over Flat and Curved Walls
Sammanfattning : Direct numerical simulations of the receptivity and instability of boundary layers on flat and curved surfaces are herein reported. Various flow models are considered with the aim to capture aspects of flows over straight and swept wings such as wall curvature, pressure variations, leading-edge effects, streamline curvature and crossflow. LÄS MER