正版软件_flo-2d软件教程软件怎样用
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关 键 词：flo-2d软件教程软件怎样用
行 业：IT 软件 通讯软件
发布时间：2021-12-23
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Inflow Hydrographs or Rainfall
Inflow hydrographs can be assigned to either the channel or floodplain nodes. The number of inflow nodes are unlimited. Any ASCII data format hydrograph can be used as input. FLO-2D can also perform as a rainfall runoff model and rain can occur on the flooded surfaces.
Solution Algorithm
The model uses the full dynamic wave momentum equation and a central finite difference routing scheme with eight potential flow directions to predict the progression of a floodwave over a system of square grid elements.
Groundwater and surface water exchange
The FLO-2D model is linked with the USGS groundwater MODFLOW model at runtime. Groundwater and surface exchange can occur in both directions.
Limiting Froude Numbers
Limiting Froude numbers can be assigned to the channels, streets and floodplain grid elements. When the limiting Froude number is exceeded in a particular grid element, the model will increase the roughness value to suppress numerical surging. It is efficient for the model flood routing to calibrate n-values for reasonable Froude numbers.
Street Flow
Streets are simulated as shallow rectangular channels with a curb. Streets can intersect and exchange flow with the floodplain.
Hydraulic Structures
Hydraulic structures can represent bridges, culverts, weirs or other hydraulic control features. Hydraulic structures are simulated by user specified discharge rating curves or tables assigned to either channel or floodplain elements. Reverse flow is possible. Culvert flow can occur between grid elements that are not contiguous. The generalized culvert equations will account for inlet and outlet control.
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