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 6 of 6 for “"Canopy flows"”.
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Exploring Boundary Layer Dynamics: Steady and Unsteady Canopy Flows and The Vertical Velocity Skewness in Turbulent Boundary Layers
L'abstract è presente nell'allegato / the abstract is in the attachment
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Residence time in coastal canopies
… dissolved and particulate materials across the canopy boundaries. In coastal environments, where flow is typically wavedominated, vertical mixing is believed to be the dominant process controlling residence time and, therefore, exchange. However, experiments have shown that wave-driven flows …
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Flow over large-scale low-order topographies: impact of heterogeneities
… elements with uniform height, i.e. homogeneous canopy, was compared to that over a heterogeneous canopy composed of elements with varied heights. The impact of three-dimensionality on the flow field over the wavy walls was investigated in multiple regimes, including developed and developing …
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Investigation of high nighttime CO2-fluxes at the Wetzstein spruce forest site in Thuringia, Germany
… site disturbs the wind field at the sub-canopy space across the ridge. As a consequence, advective fluxes of scalars as CO2 are generated at the upwind and lee sides of the hill. Two results from the model were confirmed for the first time in an experiment, namely (1) higher wind speeds …
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Effects of Posidonia oceanica seagrass on nearshore waves and wave-induced flows.
… oceanica on coastal waves and wave-induced flows, which has significant implications for coastal protection. Investigations were made on both a natural shallow Posidonia oceanica bed and, in controlled conditions of full-scale Posidonia mimics under regular and irregular waves. In the field, …
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Turbulent flows over canopies
In this thesis, turbulent flows over canopies in the sparse and dense regimes are examined using direct numerical simulation. The term `canopy' is used to refer to tall roughness elements in the flow. Sparse canopies typically have large element spacings and allow turbulent eddies to penetrate …