Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"large coherent structures"”.
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Investigation of the effect of a circular patch of vegetation on turbulence generation and sediment deposition using four case studies
… patches of vegetation. In all four cases, large coherent structures are created in the flow due to the patch. Lateral vortices are formed downstream of the patch in a von-Karman vortex street that meets at the center of the flow a distance, Lw, downstream of the patch. For the flexible …
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Investigation of the effect of a circular patch of vegetation on turbulence generation and sediment deposition using four case studies
… patches of vegetation. In all four cases, large coherent structures are created in the flow due to the patch. Lateral vortices are formed downstream of the patch in a von-Karman vortex street that meets at the center of the flow a distance, Lw, downstream of the patch. For the flexible …
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Temporal Numerical Simulations of Turbulent Coanda Wall Jets
… produces a unique combination of different large turbulentcoherent structures that constitutes both a consistent challenge for numericalsimulations and an ideal test bed for turbulence models.The Temporal Direct Numerical Simulation (TDNS) of the Coanda wall jetrestricts the focus from the …
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A Structure-based Machine Learning Approach for Spatiotemporal Fluctuations in Nuclear Thermal Fluids
… A two-level ML framework based on turbulence coherent structures is developed. In the first level, well-organized coherent structures are extracted by performing proper orthogonal decomposition on local parameters, and then a tree-based machine learning model is used to down-select the …
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Non-Equilibrium Pattern Formation in Multi-Species Interacting Particle Systems
… heat in the bulk. The formation and evolution of large coherent structures necessitate a stochastic description, using methods of non-equilibrium statistical physics. In this thesis, we study these fluctuating patterns in complex systems of multiple species of particles. We focus our study on …