Sökning: "Espen Åkervik"
Hittade 2 avhandlingar innehållade orden Espen Åkervik.
1. Feedback Control of Spatially Evolving Flows
Sammanfattning : In this thesis we apply linear feedback control to spatially evolving flows in order to minimize disturbance growth. The dynamics is assumed to be described by the linearized Navier--Stokes equations. Actuators and sensor are designed and a Kalman filtering technique is used to reconstruct the unknown flow state from noisy measurements. LÄS MER
2. 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