Search for dissertations about: "Forced boundary layer"
Showing result 1 - 5 of 27 swedish dissertations containing the words Forced boundary layer.
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1. Mesoscale dynamics and boundary-layer structure in topographically forced low-level jets
Abstract : Two types of mesoscale wind-speed jet and their effects on boundary-layer structure were studied. The first is a coastal jet off the northern California coast, and the second is a katabatic jet over Vatnajökull, Iceland. READ MORE
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2. DNS and LES of Turbulent Natural Convection Boundary Layer
Abstract : Turbulent natural convection boundary layers possess some special characteristicscompared to the other boundary layers.In order to study this kind of boundary layer, two powerful numerical methods,Direct Numerical Simulation or DNS and Large Eddy Simulation or LES,are used. READ MORE
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3. Numerical Computations of Wakes Behind Wind Farms : A tool to study Farm to Farm interaction
Abstract : More and larger wind farms are planned offshore. As the most suitable sites to build are limited these new wind farms will be constructed near to each other in so called wind farm clusters. Behind the wind turbines in these farms there is a disrupted flow of air called a wake that is characterized by reduced wind speed and increased turbulence. READ MORE
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4. The Arctic Atmosphere : Interactions between clouds, boundary-layer turbulence and large-scale circulation
Abstract : Arctic climate is changing fast, but weather forecast and climate models have serious deficiencies in representing the Arctic atmosphere, because of the special conditions that occur in this region. The cold ice surface and the advection of warm air aloft from the south result in a semi-continuous presence of a temperature inversion, known as the “Arctic inversion”, which is governed by interacting large-scale and local processes, such as surface fluxes and cloud formation. READ MORE
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5. Global Climatology and Regional Modeling of Coastal Low-Level Jets
Abstract : Localized coast-parallel wind-speed maxima at low altitude, known as coastal low-level jets (CLLJs) have important ramifications to the coastal climate and a number of human activities. This thesis documents the existence of the CLLJs around the globe including their mesoscale structure, dynamics and spatio-temporal variability. READ MORE