Sökning: "Orr--Sommerfeld--Squire equations"

Hittade 3 avhandlingar innehållade orden Orr--Sommerfeld--Squire equations.

1. 1. Optimal Control of Boundary Layer Transition

   Författare :Markus Högberg; KTH; []
   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

3. 2. Feedback and adjoint based control of boundary layer flows

   Författare :Mattias Chevalier; Dan Henningson; Jean-Marc Chomaz; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Applied mechanics; fluid and plasma; mechanical engineering; Teknisk mekanik; Engineering mechanics; Teknisk mekanik;

   Sammanfattning : Linear and nonlinear optimal control have been investigated in transitional channel and boundary layer .ows. The flow phenomena that we study are governed by the incompressible Navier–Stokes equations and the main aim with the control is to prevent transition from laminar to turbulent flows. LÄS MER

4. 3. Linear and nonlinear development of perturbations in the asymptotic suction boundary layer

   Författare :Niklas Davidsson; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

   Sammanfattning : Turbulent processes play an important role in most flow systems. To optimize and control these flows, knowledge about the mechanisms that leads to and maintains turbulence is crucial. Boundary layers with wall suction are known to delay/prevent transition as well as separation. LÄS MER