Sökning: "boundary layer stability"
Visar resultat 1 - 5 av 79 avhandlingar innehållade orden boundary layer stability.
1. Global stability and feedback control of boundary layer flows
Sammanfattning : In this thesis the stability of generic boundary layer flows is studied from a global viewpoint using optimization methods. Global eigenmodes of the incompressible linearized Navier-Stokes equations are computed using the Krylov subspace Arnoldi method. LÄS MER
2. Experimental study on turbulent boundary-layer flows with wall transpiration
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. Modelling of boundary layer stability
Sammanfattning : .... LÄS MER
4. On stability and receptivity of boundary-layer flows
Sammanfattning : This work is concerned with stability and receptivity analysis as well as studies on control of the laminar-turbulent transition in boundary-layer flows through direct numerical simulations. Various flow configurations are considered to address flow around straight and swept wings. LÄS MER
5. Stability and Receptivity of Three-Dimensional Boundary Layers
Sammanfattning : The stability and the receptivity of three-dimensional flat plate boundary layers is studied employing parabolised stability equations. These allow for computationally efficient parametric studies. Two different sets of equations are used. LÄS MER