Sökning: "Dan S. Henningson"
Visar resultat 11 - 15 av 24 avhandlingar innehållade orden Dan S. Henningson.
11. On stability of vortices and vorticity generated by actuator lines
Sammanfattning : Vortices are present in nature and in many flows of industrial importance. The stability of configurations of vortices can have real-world consequences, because vortices play a crucial role in accelerated mixing. In particular, vortices are present in the wake of wind turbines and other rotors. LÄS MER
12. Direct and Large-Eddy Simulations of Turbulent Boundary Layers with Heat Transfer
Sammanfattning : .... LÄS MER
13. Simulations of turbulent boundary layers with heat transfer
Sammanfattning : .... LÄS MER
14. Optimisation and control of boundary layer flows
Sammanfattning : Both optimal disturbances and optimal control are studied by means of numerical simulations for the case of the flat-plate boundary-layer flow. The optimisation method is the Lagrange multiplier technique where the objective function is the kinetic energy of the flow perturbations and the constraints involve the linearised Navier–Stokes equations. LÄS MER
15. Optimisation and control of shear flows
Sammanfattning : Transition to turbulence and flow control are studied by means of numerical simulations for different simple shear flows. Linear and non-linear optimisation methods using the Lagrange multiplier technique are employed. LÄS MER