Sökning: "wing section"
Hittade 5 avhandlingar innehållade orden wing section.
1. Large Eddy Simulations of Separated Compressible Flows around Wing Sections
Sammanfattning : This thesis concerns numerical calculations of compressible separated flows, with and without shocks, around wing sections using Large Eddy Simulations (LES). The considered geometries are the NACA 0012 wing section and the ONERA AT15A wing section. LÄS MER
2. Prediction of Wing Section Lift and Drag from Numerical Solutions of the Navier-Stokes Equations
Sammanfattning : A Navier-Stokes finite difference method is developed and applied to two-dimensional, incompressible, viscous flow around wing sections at medium to high Reynolds numbers. An important feature of such flows is laminar boundary layers with spatially amplified Tollmien-Schlichting waves initiating transition to turbulence. LÄS MER
3. On the Scattering Reduction of an Aircraft Wing Profile Enclosing an Antenna
Sammanfattning : In this thesis we study the radar cross section reduction and transparency of anantenna radome placed in the front part of an aircraft wing. The antenna, notstudied here, is a linearly polarized antenna operating at 1 GHz with abandwidth of 30%. LÄS MER
4. Elections, party politics and economic policy
Sammanfattning : This thesis consists of three papers on elections, party politics and economic policy.Do Parties Matter for Fiscal Policy Choices addresses the question whether parties matter for fiscal policy, i.e., government spending and the level of taxes. LÄS MER
5. Wings, turbulent boundary layers and flow separation
Sammanfattning : The present doctoral thesis investigates the turbulent flow developing around wing sections, focusing on the impact of adverse-pressure-gradient (APG) conditions on turbulent boundary layers (TBLs) and the physics of flow separation. Both experimental and numerical methods are employed to generate high-fidelity data sets and provide an in-depth analysis of the flow. LÄS MER