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.
Results
Showing 1 to 5 of 5 for “"Boundary Roughness"”.
-
Effects of boundary roughness on turbulence in uniform open channel flow
Bed composition plays an important role in natural streams. However, it is hard to quantify these effects in the field. Effects on turbulence and shear stresses are of interest, since these forces greatly impact the process of sediment transport and mixing in open-channel flows. In this study, …
-
A Generalized Log-Law Formulation For a Wide Range of Boundary Roughness Conditions Encountered in Streams
… measurements is applicable to a larger range of roughness scales than previously expected. Five different sets of detailed, experimental velocity measurements were analyzed encompassing sediment-scale roughness elements, roughness caused by rigid vegetation, and large-scale roughness elements …
-
Hydraulic Modeling of a River Network for Predicting Flood Inundation using HEC-RAS and GIS Models - A Case Study in Southern Virginia
… quantification analysis was carried out on the boundary roughness of the floodplains. The objective was to measure the extent to which flood inundated areas, water surface elevations, and channel velocities were influenced by variations on this empirically-based model coefficient. Finally, the …
-
Benthic and pelagic responses to endobenthic bioturbator (Kraussillichirus kraussi) density, temperature and eutrophication in a global change mesocosm experiment
… sandprawn bioturbation rates. Sediment boundary roughness (a proxy for bioturbation) increased by 43% at maximum sandprawn density under high temperatures (29.5℃), suggesting robustness of sandprawn physiology to future warming scenarios, particularly within populations inhabiting …
-
Flow in two-stage channels with the main channel skewed to the flood plain direction
… stage-discharge assessment for the smooth boundary case, stage-discharge assessment for the rough boundary case, flow resistance concepts for two-stage channels, deviation of the flood plain streamlines in the cross-over region, entrainment of flood plain flow down into the main channel …