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’.

Geometry

Line

Attributes

Table 34 1D2D Exchange 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

Table 35 1D2D Potential breach 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