In this master’s thesis we study the phenomenon of turbulence and its analysis through large eddy Simulation (LES). We first discuss the fundamental conservation laws, such as the conservation of mass, momentum, angular momentum, and scalar quantities. We then focus on the filtering procedure and the modeling of small scales. We examine the closure problem and various models used to address it, with the Smagorinsky model serving as the main example. An important part of the thesis is also the analysis of energy, which is based on Kolmogorov’s theory of turbulence and allows us to estimate the error of the method. In the final part, numerical simulations performed with the MicroHH model are presented, illustrating turbulent processes in the atmosphere above the regions of Planica and the Ljubljana Marshes. The results are compared with available SODAR sensor measurements and the existing Aladin model.
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