Dam break past a building
Does the model get the wake and jumps around a single building?
Soares-Frazão (2007)
Version 1.0.0
- Right answer
- Laboratory or field measurements · Soares-Frazão (2007)
- Results
- No model run yet · see them ↓
- Must
- match the gauge records
What happens
A laboratory dam break hits one block; a hydraulic jump forms in front of it and a wake behind.
Why it matters
Building-scale flood hazard needs the forces and depths around obstacles.
A good model must
- match the gauge records
- time the front's arrival within 0.5 s
How models did
No model has been scored on this test yet.
Status of this test
Draft. To become candidate it needs: reference (truth) available.
Technical details for reviewers Checks, reference, inputs, sources
What this test still needs
- Reference data: request from authors.
Checks and why each limit was chosen
| Check | Difference measured as a percentage of | Latest | Difference | Why this check |
|---|---|---|---|---|
| gauge_nse NSE of h · in the score | not a percentage: reported as the NSE (1 is perfect) | – | Provisional; set from measurement uncertainty once gauge data are obtained. | |
| front_arrival arrival_time_error of h · timing, beside the score | not a percentage: reported in seconds | – | Provisional; five output steps at the specified 0.1 s frequency. |
Reference
Measured data at reference/gauges.parquet; availability: request from authors.
Promotion checklist
Only frozen tests have fixed inputs and answers. This list is computed from the manifest and the published score cards; the rules are in the method.
- ✓Data licence verifiedfor candidateOGL-UK-3.0
- ✓All inputs availablefor candidateall committed or fetched by SHA-256
- ✗Reference (truth) availablefor candidatemeasured data not yet obtained (request from authors)
- ✓Every tolerance justifiedfor candidateeach gating criterion has a rationale
- ✗A published run passesfor frozenno passing score card published yet
- ✓Order of accuracy shownfor frozennot a verification case
- ✗Two independent codes passfor frozenpassing codes: none — needs a second, independently written solver or engine
- ✗Maintainer review recordedfor frozenno maintainer review recorded
Inputs
| File | Role | Format | SHA-256 | Get it |
|---|---|---|---|---|
inputs/terrain.asc | terrain | esri_ascii_grid | 69a0722f0620… | Fetched by hash from source |
inputs/output_points.csv | probes | csv | 78123efa0ea4… | Download |
inputs/case.json | case_parameters | json | e2ae35f95ec8… | Download |
About this test
UCL laboratory dam break through a 1 m gate against a single idealised building (Soares-Frazão & Zech 2002, IMPACT), as adopted by the Environment Agency. Tests hydraulic jumps and the wake behind an obstacle against gauge measurements.
| Parameter | Value |
|---|---|
| Manning's n | 0.01 |
| Grid | 0.1 m (DEM 0.05 m) |
| Run time | 2 min |
| Initial depths | 0.4 m upstream, 0.02 m downstream |
Status: draft — the DEM and gauge locations are real; gauge measurements still have to be obtained.
Data and licence
Inputs come from the GOV.UK 'Benchmarking model data' archive, published under the Open Government Licence v3.0 (the page licence; the archive carries no other terms). Attribution: Environment Agency, SC120002 (2013), test specifications May 2010.
- Archive: https://assets.publishing.service.gov.uk/media/6033a9bbd3bf7f72182e99ca/Benchmarking_Model_Data.zip (SHA-256
388c2789570e5975fe909033e34bedbe5d7bde5e6d7f9b7d7c1eaf04e58bc732) - Landing page: https://www.gov.uk/flood-and-coastal-erosion-risk-management-research-reports/2d-benchmarking-evaluating-the-latest-generation-of-the-hydraulic-models-for-fcrm
- Report: https://assets.publishing.service.gov.uk/media/6033a943d3bf7f721f4b0d49/_SC120002_Benchmarking_2D_hydraulic_models_Report.pdf
Fetch the non-committed inputs with python scripts/fetch_inputs.py A2L-EA6A.
Sources
- Soares-Frazão, S., Zech, Y. (2007). Experimental study of dam-break flow against an isolated obstacle. doi:10.1080/00221686.2007.9521830
- Néelz, S., Pender, G. (2013). Benchmarking the Latest Generation of 2D Hydraulic Modelling Packages. SC120002. www.gov.uk/flood-and-coastal-erosion-risk-management-researc
Test A2L-EA6A_dambreak_isolated_building · version 1.0.0 · data licence OGL-UK-3.0