3.112D Domains (.tgc File)
2D domains are created by building them through a series of commands contained in .tgc files. The .tgc file contains or accesses from other files information on the size and orientation of the grid, grid cell codes, bed/ground elevations, bed material type or flow resistance value, and optional data such as ripple height, wave climate, wind field, etc.
A 2D domain is automatically discretised as a grid of square cells. Each cell is given characteristics relating to the topography such as ground/bathymetry elevation, bed resistance value and initial water level, etc.
Only one .tgc file per 2D domain is specified in the .tcf file using Geometry Control File.
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