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Showing 1 to 6 of 6 for “"Manning's Roughness."”.
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Headcut retreat resulting from plunge pool erosion in a 3D landscape evolution model
… flow, height of the headcut, upstream slope and Manning's roughness, and the relevant soil parameters (erodibility and critical shear stress). The model was analyzed to study its behavior as its input parameters changed, and its output was compared to experimental observations. Next, the plunge …
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Uma metodologia para a estimativa de parâmetros no cálculo da propagação de enchentes
… The main parameters to be adjusted were the Manning's roughness coefficient and the hydraulic radius exponent, both of them included on the friction slope expression. A third important parameter was the lateral inflow contribution at the reach of the river in study. For the application of the …
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Modeling the Biogenic Effects of Freshwater Mollusks on Bedload Transport and Dynamics in a Gravel-Bedded Stream
… transport models integrated with biogenic Manning's roughness and organism-sediment particle size distributions for bankfull discharge events; and reach and patch-scale spatial analysis examining relationships between biogenic variables and sediment particle quantile D50. This study found …
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Estimating Floodplain Vegetative Roughness using Drone-Based Laser Scanning and Structure from Motion Photogrammetry
… at the Virginia Tech StREAM Lab to determine Manning's roughness coefficient. We utilized two calibrated approaches and a calculated approach to estimate roughness from the two data sets (DLS and SfM), then utilized them in a two-dimensional (2D) hydrodynamic model (HEC-RAS). The calculated …
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Improving Design Guidance for In-Stream Structures Used in Stream Restoration
… of several common prediction methods for Manning's roughness coefficient n, used in SPSC design velocity calculations. This was done by using Rhodamine WT dye tracer experiments to determine n values during storm flows in two SPSC structures in Annapolis, MD, which were then compared to …
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Flow resistance corrections for physical models using unit flowrates
… in open channels is commonly characterized by Manning's resistance equation, where a value of Manning's roughness coefficient n, indicates the magnitude of flow resistance. Physical hydraulic models are one method to estimate Manning's n values for prototype channel reaches. A physical …