Mesh Zone Data Fields (SWMM)
Mesh Zone data can be edited on either the Mesh Zone Grid Window of the Polygons Grid or the Mesh Zone Property Sheet.
The following describes all the data which can be used to define a Mesh Zone.
Common Data Fields Fields that are common to the majority of objects can be found in the Common Fields topic.
Mesh Zone Data
Database Table Name: sw_mesh_zone
|
Field Name |
Help Text |
Database Field |
Size |
Precision |
Default |
Error Lower Limit |
Error Upper Limit |
Warning Lower Limit |
Warning Upper Limit |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
ID |
The name of the zone |
polygon_id |
Text |
64 |
|
0 |
|
|
|
|
|
|
Area |
Zone area. Default value calculated from polygon geometry. |
area |
Double |
|
CA |
3 |
|
|
|
|
|
|
Maximum triangle area |
A measure of the mesh resolution within the zone. Maximum allowable triangle area when creating a 2D mesh. If a value is not specified in this field, or if the specified Maximum triangle area is greater than the Maximum triangle area of the 2D Zone containing the Mesh Zone, the value from the 2D Zone will be used for generating the mesh. |
max_triangle_area |
Double |
|
NA |
3 |
|
0.001 |
|
|
|
|
Override 2D zone minimum element area setting |
Check this option to use the Minimum element area specified for the Mesh Zone for the mesh elements contained within the mesh element boundary. If this option is left unchecked, the Minimum element area specified for the 2D Zone containing the Mesh Zone will be used. |
apply_min_elt_size |
Boolean |
|
0 |
0 |
|
|
|
|
|
|
Minimum element area |
Minimum mesh element area used for calculating results. Used if the Override 2D zone minimum element area setting option is selected. Mesh zone elements with area less than the minimum area specified, will be aggregated with adjoining mesh zone elements, until the minimum area is met. This is done for the purpose of calculating results in order to improve simulation stability and run time. |
min_mesh_element_area |
Double |
|
NA |
3 |
|
0 |
|
|
|
