1D2D Objects
1D2D objects regulate the exchange between 1D Objects and the 2D domain. There are two 1D2D objects in 3Di models:
Exchange line
Line that determines which 2D cells the calculation points of a Channel connect to. A 1D2D connection is created from each calculation point on the Channel to the cell in which the closest point on the Exchange line is located. Applies only to channels with Exchange types ‘connected’ or ‘double connected’. The page Editing schematisations contains information on generating exchange lines.
Layer name
exchange_line
Geometry
Line
Attributes
Attribute alias |
Field name |
Type |
Mandatory |
Units |
Description |
|---|---|---|---|---|---|
ID |
id |
integer |
Yes |
- |
Unique identifier |
Code |
code |
text |
No |
- |
Name field, no constraints |
Display name |
display_name |
text |
No |
- |
Name field, no constraints |
Exchange level [m MSL] |
exchange_level |
decimal number |
Yes |
m MSL |
Exchange level for the 1D2D connections. See 1D2D Exchange |
Channel ID |
channel_id |
integer |
Yes |
- |
ID of the channel |
Tags |
tags |
text |
No |
- |
Comma-separated list of foreign key references to ID’s in Tag |
Potential breach
Line from a Channel to a 2D cell, to create a potential breach location. At these locations, the 1D2D connection can be breached during the simulation.
Layer name
potential_breach
Geometry
Line
Attributes
Attribute alias |
Field name |
Type |
Mandatory |
Units |
Description |
|---|---|---|---|---|---|
ID |
id |
integer |
Yes |
- |
Unique identifier |
Code |
code |
text |
No |
- |
Name field, no constraints |
Display name |
display_name |
text |
No |
- |
Name field, no constraints |
Initial exchange level |
initial_exchange_level |
decimal number |
Yes |
m MSL |
Exchange level for the 1D2D connection when the breach has not been activated yet |
Final exchange level |
final_exchange_level |
decimal number |
No |
m MSL |
Breach will grow down to this level, before growing in width. |
Levee material |
levee_material |
text |
No |
- |
Set the material of the levee: sand (1) or clay (2) |
Channel ID |
channel_id |
integer |
Yes |
- |
ID of the channel |
Tags |
tags |
text |
No |
- |
Comma-separated list of foreign key references to ID’s in Tag |