The 2D Analysis Criteria has the following dialog:
The 2D Analysis Criteria dialog requests a number of values:
Manning's n - The Manning’s n roughness value of the site to be assessed. This can be selected from a predefined list or user specified.
|
Type |
Manning's n |
|---|---|
| Urban | 0.018 |
| Mixed | 0.030 |
| Rural | 0.100 |
Minimum Element Area - The smaller the minimum element area the more accurate the analysis but the longer it takes.
Rainfall Set - Select a rainfall set from the Rainfall Manager.
If Static analysis has been selected on the Analysis Criteria then 2D will also be ran as a static analysis. 2D will be set to use the same rainfall source as the Analysis Criteria and will use the same validation meaning it can only be used with the Modified Rational runoff method, which uses a peak rainfall intensity to produce the inflow hydrograph rather than a full hyetograph.