By Chih Ted Yang, Lawrence K. Wang
This booklet, Advances in Water assets Engineering, quantity 14, covers the subjects on watershed sediment dynamics and modeling, built-in simulation of interactive floor water and groundwater platforms, river channel stabilization with submerged vanes, non-equilibrium sediment delivery, reservoir sedimentation, and fluvial tactics, minimal power dissipation expense thought and purposes, hydraulic modeling improvement and alertness, geophysical tools for evaluate of earthen dams, soil erosion on upland components via rainfall and overland move, geofluvial modeling methodologies and purposes, and environmental water engineering glossary.
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Additional info for Advances in Water Resources Engineering
With the 30 × 30-m-resolution DEM, this watershed is delineated by nearly 200,000 units in total. 18). Divided by the Zichang station, the density of the rainfall station network in the upstream region is higher than that in the downstream region. As a result, the region in the upstream of the Zichang station is used for simulation. 18) are used as the rainfall inputs, and the observed data recorded at the Zichang station are used to evaluate the simulation results. 3). 20. 5. It is observed that the simulation results reflected the soil erosion process with acceptable precision as a whole.
One is the headwater sub-watersheds, which do not need the input data from the upstream. The other is those sub-watersheds which need the input data from their related upstream sub-watersheds, and their simulation sequences and the data transferring paths must follow the routes from the upstream to downstream sub-watersheds. 5) from the watershed outlet should be simulated first. 6 presents the flowchart for the dynamic watershed decomposition . As mentioned above, three types of nodes are included in this parallel computing system.
4) where ql runoff per meter width at the bottom of the hillslope (m2/s). By assuming that the moisture content at the vertical middle of the topsoil layer equals to its average value, and the surface soil is saturated during rainfall, the infiltration process from the land surface to the topsoil is generalized as one-dimensional vertical seepage, where the unsaturated Darcy’s law can be used. The relative hydraulic conductivity of unsaturated to saturated soil is expressed by an exponential function of the saturation degree.
Advances in Water Resources Engineering by Chih Ted Yang, Lawrence K. Wang