The first command required to link 1D domains into 2D domains is ESTRY Control File in the .tcf file. This provides a link between the .tcf file and the .ecf file. It is strongly recommended that ESTRY Control File Auto be used to force the .ecf file to have the same name as the .tcf file. Both .tcf and .ecf files should be in the same (runs) folder (see Section 2.2.2).
To link 1D and 2D domains use the 2D HX and 2D SX boundary types connected to 1D nodes (1d_nwk layer) using CN lines or points in the 2d_bc layer as described in Table 4 .24 and Table 4 .25 in Section 3.17.7. The recommended approach for when to use HX and SX connections is as follows:
2D HX boundaries are preferred for transitioning between 1D domains and 2D domains, or when carving a 1D network through a 2D domain (see Figure 4 .11).
2D SX boundaries are preferred for inserting 1D channels inside a 2D domain. For example, a 1D culvert underneath a road embankment, or for modelling connections to underground pipe drainage systems.
