Sökning: "wind direction"
Visar resultat 16 - 20 av 84 avhandlingar innehållade orden wind direction.
16. New Perspectives on Solar Wind-Magnetosphere Coupling
Sammanfattning : The streaming plasma in the solar wind is a never ending source of energy, plasma, and momentum for planetary magnetospheres, and it continuously drives large-scale plasma convection systems in our magnetosphere and over our polar ionosphere. This coupling between the solar wind and the magnetosphere is primarily explained by two different processes: magnetic reconnection at high latitudes, which interconnects the interplanetary magnetic field (IMF) with the planetary dipole field, and low-latitude dynamos such as viscous interaction, where the streaming plasma in the solar wind may trigger waves and instabilities at the flanks of the magnetosphere, and thereby allow solar wind plasma to enter into the system. LÄS MER
17. On Design and Analysis of a Novel Transverse Flux Generator for Direct-driven Wind Application
Sammanfattning : This thesis deals with the analysis of a permanent magnet synchronous generator suited for direct-drivenwind turbines inmegawatt class. The higher specific torque and power density of a transverse flux permanent magnet machine in comparison to conventional radial-flux machines make it a promising solution for direct-driven wind turbine generators. LÄS MER
18. Vindkraft, landskap och mening. En studie om vindkraft och människans rumsliga preferenser
Sammanfattning : The point of departure for this thesis is a core question in present-day environmental work, namely how to balance the conservation of nature against its utilisation. A wind power venture on a large scale energy production will, for instance, obviously have an impact on the natural scenery of the coastline. LÄS MER
19. Natural Ventilation and Air Infiltration in Large Single‑Zone Buildings : Measurements and Modelling with Reference to Historical Churches
Sammanfattning : Natural ventilation is the dominating ventilation process in ancient buildings like churches, and also in most domestic buildings in Sweden and in the rest of the world. These buildings are naturally ventilated via air infiltration and airing. LÄS MER
20. Always on the wing - Fluid dynamics, flight performance and flight behavior of common swifts
Sammanfattning : The aerodynamics and kinematics behind the flight of animals are relatively unknown. Although animal flight has been studied for several hundreds of years, it is only in recent time that we have the technical abilities to study the mechanistic basis of animal flight. LÄS MER
