=(network_structure)
Network structure
A fundamental concept in MIKE IO 1D is the network structure. Every single result is attached to a part of the network. Knowing this structure will help you navigate to results you’re interested in. This sections provides a brief introduction to this structure. For additional information, refer to the MIKE 1D API.
Overview
MIKE result networks consist of the following four geometric types:
Nodes
Reaches (consisting of grid points)
Catchments
Global data
Reaches
A reach has many synonyms within different domain applications. In sewer models it is often called a link or pipe, in river models a branch, stream, canal or channel, and in graph and network theory it is called a link or an edge. A reach contains several ‘grid points’ along its path.
Grid Points
Grid points are the computational points along a reach. A flow model has different types of grid points:
H grid point: contains water level and an associated cross section
Q grid point: contains discharge or flow velocity.
Structure grid point: calculates discharge over a structure depending on the water levels on each side of the structure.
Nodes
Nodes are attached to one or more reaches. Nodes can be one of several types, including: manholes, basins, outlets, and junction nodes. They may or may not have a volume.
Catchments
Catchments are geographical areas associated with a result (e.g. hydrologic models consist of several catchments). They are connected to a point on the network (e.g. node or grid point).