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 8 of 8 for “"turbulent stress"”.
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Analytical and experimental studies of plant-flow interaction at multiple scales
… canopies based on the relative contribution of turbulent stress and canopy drag to the momentum balance. Within sparse canopies, velocity and turbulent stress remain elevated and the rate of sediment suspension is comparable to that in unvegetated regions. Within dense canopies, velocity and …
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An implicit numerical solution of the turbulent three-dimensional incompressible boundary-layer equations
… of solving the three-dimensional, incompressible turbulent boundary-layer equations was developed using a Crank-Nicholson implicit finite-difference technique, with the turbulent stress terms modeled with an eddy-viscosity model obtained from mixing length theory. The method was applied to two …
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The relationship between microscales and wind-wave spectral development
… theories. Measurements of wave height and of the turbulent atmospheric and subsurface boundary layers were made, from a small surface following platform and from a stable 38.5m spar buoy. The structure of moving gust patterns (cat's paws) is described and related to the generation of surface …
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Temporal Numerical Simulations of Turbulent Coanda Wall Jets
… modeling techniques is carried for the turbulent wall jet over aconvex surface (Coanda wall jet.) The simultaneous presence of multipleinstability mechanisms and the interaction with the turbulence dynamics at thesolid boundary produces a unique combination of different large …
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Developing a mechanistic model for flow through a perforated plate with application to screening of particulate materials
… et al. (2006) to capture the kinetic and turbulent stresses obtained in granular flow on an inclined vibrating screen. In general, DEM was employed to develop a mechanistic model of screening which includes a description of the rheology of granular flow on a vibrating screen. Microscopic …
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Supersonic Corner Flows in Rectangular Channels
… due to the fact that they do not capture known, stress-induced, corner vortices. However, the quadratic constitutive relation improves prediction of the corner boundary-layer structure, reducing experimental-computational differences by as much as half. This improvement is associated with …
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Computational Analysis of Internal Coral Hydrodynamics
… gradients of nutrients and waste, and the turbulent stresses developed on and above the coral surface. Though the large-scale hydrodynamics over coral reefs are well studied, the interior hydrodynamics, between the branches, remains uncharacterized due to limited optical and acoustic access …
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The fluvial dynamics of compound meander bends
… momentum flow and corresponding high bed shear stresses. The upstream lobe of the compound loop, which has a dimensionless radius of curvature about one-third less than that of the downstream lobe, also has an average bank erosion rate less than half of the erosion rate for the downstream lobe. …