grid
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The mesh of square cells that make up a TUFLOW model.
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h-point
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Computational point located in the centre of a 2D cell.
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invert
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The elevation of the base (bottom) of a culvert or other structure.
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IWL
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Initial Water Level
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land cell
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A land cell is one that will never wet, ie. an inactive cell.
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layer
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A GIS data layer (referred to as a “table” in MapInfo).
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line
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A GIS object defining a straight line defined by two points. See also, polyline (Pline).
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MAT
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Material type.
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Material
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Term used to describe a bed resistance category. Examples of different materials are: river, river bank, mangroves, roads, grazing land, sugar cane, parks, etc.
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MI
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“MI” indicates input or output is in the MIF/MID format. Two files, the .mif and .mid files as written by a GIS, are opened or saved.
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MID
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“MID” indicates input or output is in the format of a .mid file as written by a GIS. This format is a comma delimited format and is commensurate with the .csv format used by Microsoft Office. The input file can have any extension (eg. .csv). These files can be opened in a text editor, Microsoft Excel and other software.
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MIF/MID
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MapInfo Industry standard GIS import/export format.
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node
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Water level computation point in a 1D domain.
Node in a finite element mesh used for viewing 2D results in SMS. The nodes are located at the cell corners.
Node is also used by MapInfo to refer to vertices along a polyline or a region (polygon).
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null cell
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A null cell is an inactive 2D cell used for defining the inactive side of an external boundary.
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obvert
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The elevation of the underside (soffit) of a culvert or other structure.
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pit
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A node with attributes that are used to define a pit channel.
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pit channel
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A small channel inserted at a pit typically used to convey water from overland 2D domains to 1D pipe networks.
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point
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GIS object representing a point on the earth’s surface. A point has no length or area.
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polygon
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See region.
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