Sökning: "aerodynamic damping"
Visar resultat 1 - 5 av 13 uppsatser innehållade orden aerodynamic damping.
1. Forced response numerical investigation of a transonic compressor rotor
Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)Sammanfattning : The present thesis discusses the forced response of a rotor’s bladed-disk when excited by the periodic force produced by a wake generator, or Inlet Guide Vane (IGV),with 8 equally-spaced blades. These components are part of an axial transonic compressor rig, moreover the Transonic Compressor Darmstadt 1 (TCD1), located at the Technical University of Darmstadt. LÄS MER
2. Aerodynamic Analysis of Reflex Airfoils at Low Reynolds Numbers
Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)Sammanfattning : Low Reynolds number airfoil analysis has become increasingly significant as urban air mobility vehicles and unmanned aerial vehicles surge in popularity. The Green Raven project at KTH Aero aims to use reflex airfoils where little data is available beyond classical analysis. LÄS MER
3. Load Control Aerodynamics in Offshore Wind Turbines
Master-uppsats, KTH/Kraft- och värmeteknologiSammanfattning : Due to the increase of rotor size in horizontal axis wind turbine (HAWT) during the past 25 years in order to achieve higher power output, all wind turbine components and blades in particular, have to withstand higher structural loads. This upscalingproblem could be solved by applying technologies capable of reducing aerodynamic loads the rotor has to withstand, either with passive or active control solutions. LÄS MER
4. Maglev deployment in winter climate
Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)Sammanfattning : As of year 2020, maglev train systems are not in service in areas with harsh winter climate. Compared to conventional railway, the technology is relatively new and untested in conditions of low temperatures, icing and snow. LÄS MER
5. Numerical analysis of aerodynamic damping in a transonic compressor
Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)Sammanfattning : Aeromechanics is one of the main limitations for more efficient, lighter, cheaper and reliable turbomachines, such as steam or gas turbines, as well as compressors and fans. In fact, aircraft engines designed in the last few years feature more slender, thinner and more highly loaded blades, but this trend gives rise to increased sensitivity for vibrations induced by the fluid and result in increasing challenges regarding structural integrity of the engine. LÄS MER