TWW - SWMM correspondances

Title/Notes:

No correspondance in TWW. This parameter must be set by the user in the template .inp file or before running the simulation.

  • Copied from the template input file if exists.

Options:

No correspondance in TWW. This parameter must be set by the user in the template .inp file or before running the simulation.

  • Copied from the template input file if exists.

Climatology:

No correspondance in TWW. This parameter must be set by the user in the template .inp file or before running the simulation.

  • Copied from the template input file if exists.

Hydrology:

Rain Gauges [Gages in SWMM]:

TWW_SWMM creates one raingage for each subcatchment.

By default:

  • Time serie: Each raingage is related to a default rain time serie called default_tww_raingage_timeserie. The time serie must be created and the value Series Name updated accordingly.

  • Other parameters have default SWMM values

See vw_swmm_raingages.sql for details.

Aquifers:

TWW_SWMM creates an aquifer for each TWW aquifer.

By default:

  • An aquifer is created for each TWW aquifer

  • The bottom elevation is set to the minimal_groundwater_level

  • The water table elevation is set to the average_groundwater_level

  • Other parameters have default SWMM values

See vw_swmm_aquifers.sql for details.

Subcatchment:

TWW_SWMM creates a subcatchment for each TWW catchment area.

By default:

  • A subcatchment is created for each TWW wastewater_networkelement linked to the catchment area (max. 4: fk_wastewater_networkelement_rw_current, fk_wastewater_networkelement_rw_planned, fk_wastewater_networkelement_ww_current, fk_wastewater_networkelement_ww_planned)

  • it is linked to a rain gage.

  • The width is computed from the mean of the minimal / maximal distance between the outlet and the catchment area contour. If the outlet is unknown the centroid is used rather than the outlet.

  • The coverages (attribute land uses) are computed from the intersection between the catchment area and the planning zone (see vw_swmm_coverages.sql)

  • SWMM Dry Weather Flow:

    • are set to 0 for rain water subcatchments

    • are set to waste_water_production[_current,_planned] if set

    • else it computed from the subcatchement area and population_density[_current,_planned]

  • Other parameters have default SWMM values

The subcatchment can be linked to an aquifer via the groundwater attribute.

See vw_swmm_subcatchments.sql, vw_swmm_subareas.sql, vw_swmm_dwf.sql and vw_swmm_coverages.sql for details.

Snow Packs

No correspondance in TWW. This parameter must be set by the user in the template .inp file or before running the simulation.

  • Copied from the template input file if exists.

Unit hydrographs

No correspondance in TWW. This parameter must be set by the user in the template .inp file or before running the simulation.

  • Copied from the template input file if exists.

LID Controls

No correspondance in TWW. This parameter must be set by the user in the template .inp file or before running the simulation.

  • Copied from the template input file if exists.

Hydraulics

Junctions

  • TWW_SWMM creates a junction for each TWW manhole, some kind of special structures and the wastewater nodes linking primary pipes without a wastewater structure.

See vw_swmm_junctions.sql for details.

Outfalls

  • TWW_SWMM creates an outfall for each TWW discharge_point.

See vw_swmm_outfalls.sql for details.

Dividers

  • TWW_SWMM creates a divider for the manholes and special structures having the function separating_structure

  • See vw_swmm_dividers.sql for details.

Storage Units

  • TWW_SWMM creates a storage for some kind of TWW infiltration installations and some kind of TWW special structures.

  • See vw_swmm_storages.sql for details.

Conduits

  • TWW_SWMM creates a conduit for each TWW reach.

  • Roughness is created from coefficient_of_friction, wall_roughness or swmm_default_coefficient_of_friction (see: Coefficient of friction)

  • TWW profile type are matched to SWMM profile type, dimensions are computed from reach.clear_height and pipe_profile.height_width_ratio

  • Custom pipe profile described by a curve are currently not exported

  • See vw_swmm_conduits.sql and vw_swmm_xsections.sql for details.

Pumps

  • TWW_SWMM creates a pump for each TWW pump. When a curve tww_od.hq_relation is liked to the pump it is exported as a SWMM curve.

  • See vw_swmm_pumps.sql and vs_swmm_curves.sql for details.

Orifices

No correspondance in TWW. Orifices are not created from TWW objects. An empty table is created

  • See vw_swmm_orifices.sql for details.

Weirs

  • Are created from TWW prank weir (without H/Q relation) and leaping weir.

  • See vw_swmm_weirs.sql for details.

Outlets

No correspondance in TWW. However, outlets are created to export TWW prank weir having a H/Q relation.

  • See vw_swmm_outlets.sql for details.

Transects

No correspondance in TWW. This parameter must be set by the user in the template .inp file or before running the simulation.

  • Copied from the template input file if exists.

Controls

No correspondance in TWW. This parameter must be set by the user in the template .inp file or before running the simulation.

  • Copied from the template input file if exists.

Quality

Land uses

  • TWW_SWMM creates a SWMM land use kind for each TWW planning zone kind.

  • See vw_swmm_landuses.sql

Pollutants

No correspondance in TWW. This parameter must be set by the user in the template .inp file or before running the simulation.

  • Copied from the template input file if exists.

Curves

  • Are created for pumps linked to a tww_od.hq_relation and for wastewater structures linked to a tww_od.hydr_geom_relation

  • See vw_swmm_curves.sql for details.

Time series

No correspondance in TWW. This parameter must be set by the user in the template .inp file or before running the simulation.

  • Copied from the template input file if exists.

Time patterns

No correspondance in TWW. This parameter must be set by the user in the template .inp file or before running the simulation.

  • Copied from the template input file if exists.

Labels

No correspondance in TWW. This parameter must be set by the user in the template .inp file or before running the simulation.

  • Copied from the template input file if exists.