Search for dissertations about: "non-local turbulence"
Showing result 1 - 5 of 6 swedish dissertations containing the words non-local turbulence.
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1. Large Eddy Simulation of Non-Local Turbulence and Integral Measures of Atmospheric Boundary Layers
Abstract : A new large eddy simulation (LES) code is developed and used to investigate non-local features of turbulent planetary boundary layers (PBLs). The LES code is based on filtered Navier-Stokes equations, which describe motions of incompressible, Boussinesq fluid at high Reynolds numbers. READ MORE
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2. 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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3. Effects of coastal forcing on turbulence and boundary-layer structure
Abstract : Coastal mountains of significant elevation impose constraints for the surrounding flow. The aim of this study is to describe the modifications of the marine atmospheric boundary layer that occur offshore of the west coast of the United States. Aircraft measurements, up to 1000 km off the coast from two experiments, are used. READ MORE
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4. Studies of stratocumulus-topped boundary layers using a numerical weather prediction model
Abstract : Persistent stratocumulus clouds are commonly observed in many areas on Earth. In general, stratocumulus clouds cool the Earth-atmosphere system due to their influence on the radiation budget. It is therefore essential to describe such clouds accurately in climate and numerical weather prediction models. READ MORE
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5. Boundary Conditions for Spectral Simulations of Atmospheric Boundary Layers
Abstract : An atmospheric boundary layer (ABL) is generally a very high Reynolds number boundary layer over a fully rough surface that is influenced by different external forces. Numerical simulations of ABLs are typically demanding, particularly due to the high Reynolds numbers. READ MORE