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 “"Rough-wall flow"”.
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Experimental Investigation of Highly Irregular Roughness Effects in Wall Turbulence
Finally, the spatial structure of flow over the RF1 surface is contrasted with that over the smooth wall, both within and outside the roughness sublayer, to further assess the possibility of structural modifications due to roughness. Hairpin vortex packets, commonly observed in smooth-wall …
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Inner-outer interactions in a rough-wall turbulent boundary layer
… understanding of inner-outer interactions in rough-wall turbulent boundary layers. These interactions were recently established over smooth-wall turbulent boundary layers as modulating interactions, where the outer layer large scales amplitude and frequency modulate the near-wall small scales. …
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Experimental study of low-order models of highly-irregular roughness and their impact on turbulent boundary layers
… scales present within irregular surface roughness on a turbulent boundary layer under both developing- and developed-flow conditions. Low-order representations of highly irregular surface roughness replicated from a turbine-blade damaged by deposition of foreign materials were generated …
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New approach to tidal stream energy analysis at sites in the English Channel
… low a resolution to capture high velocity tidal flows<br/>constrained by coastal topography. Analytical solutions for maximum energy<br/>extraction in simple tidal channels have been produced, but they have not<br/>been extended to more complex open-boundary cases such as flow …
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Wall Jet Boundary Layer Flows Over Smooth and Rough Surfaces
The aerodynamic flow and fluctuating surface pressure of a plane, turbulent, two-dimensional wall jet flow into still air over smooth and rough surfaces has been investigated in a recently constructed wall jet wind tunnel testing facility. The facility has been shown to produce a wall jet flow with …
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Structure of 2-D and 3-D Turbulent Boundary Layers with Sparsely Distributed Roughness Elements
… distribution, thus studying the response of the flow to a sequence of perturbations; and in Part 3, the distributions were subjected to 3-D turbulent boundary layers, thus examining the effects of streamwise and spanwise pressure gradients on the same perturbed flows as considered in Part 2. The …