1D2D Objects
1D2D objects allow for an 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 Calculation types ‘connected’ or ‘double connected’. The page generate_exchange_lines contains information on generating exchange lines.
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 |
Exchange level [m MSL] |
exchange_level |
decimal number |
Yes |
m MSL |
Exchange level for the 1D2D connections. Only used when calculation |
Channel ID |
channel_id |
integer |
Yes |
- |
ID of the channel |
Potential breach
Line drawn 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.
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. Only used when calculation type is ‘connected’. |
Max breach depth [m] |
maximum_breach_depth |
decimal number |
No |
m |
Maximum depth of the breach, in m below the exchange level. |
Levee material |
levee_material |
text |
No |
- |
Set the material of the levee: sand or clay |
Channel ID |
channel_id |
integer |
Yes |
- |
ID of the channel |