Nicola Clinco
Filter stabilization for the compressible Navier Stokes equations with applications to atmosphere dynamics.
Rel. Claudio Canuto. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Matematica, 2023
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Abstract
This thesis is about on a stabilization technique for the compressible Euler equations with application in the atmospherical flow dynamics. Despite the computational resources available, a Direct Numerical Simulation (DNS) in the atmospherical flow simulations is still far away from our possibilities, this is not only due to the mesh size requirement in terms of storage and computational power, but this is also due to the restriction of the time step in order to respect the CFL condition. One of the remedy of this issue is the LES (Large-eddy-simulation) which is a technique that consists to simulate the large structures while the smallest are modelled by a "sub-grid model".
Inspired by the LES methodology,another approach to stabilize the oscillations in the domain is the so called Evolve-Filer-Relax algorithm that is well investigated in the literature only for the incompressible flows
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