Kinematic Wave (B)¶
The Kinematic Wave (Model B) is a surface runoff model with moderate data requirements. The runoff computation is based on a comprehensive treatment of hydrological losses (including infiltration) and the runoff routing by the Kinematic Wave (Manning) formula. Technical details can be found in the MIKE 1D Reference Manual.
Model Data¶
Figure: The Kinematic Wave Model tab
A full overview of the editor fields and corresponding attributes is provided in the table below.
| Edit field | Description | Used or required by simulations | Field name in datastructure |
|---|---|---|---|
| Length | Characteristic length of the catchment | Yes | ModelBLength |
| Slope | Representative slope of the catchment | Yes | ModelBSlope |
| Parameter Set | Reference to a set of model parameters to be used for the current catchment | Yes | ModelBParBID |
| Contributing Area (five fields) | Fraction of the actual model area for each surface category | Yes | ModelBAISteep, ModelBAIFlat, ModelBAPSmall, ModelBAPMedium, ModelBAPLarge |
| Use Local Manning values | Allows for local use of individual Manning coefficients | Optional | ModelBLocalNo |
| Formulation | Selects whether the local Manning values are expressed as Manning (M) or Manning (n) | Yes, If Use local Manning values is chosen | FricTypeNo |
| Manning Number (five fields) | Local value of the Manning number for various types of catchment surfaces | Optional | ModelBMISteep, ModelBMIFlat, ModelBMPSmall, ModelBMPMedium,ModelBMPLarge |
Table: Overview of the Kinematic Wave model attributes (Table ms_Catchment)
Parameters Kinematic Wave¶
The Kinematic Wave model uses a relatively large number of parameters. For practical reasons, these parameters have been grouped in parameter sets, which, in turn, can be associated with certain catchments. The entire model setup can thus be established with a very small amount of information, while still allowing for full spatial variation of model parameters for individual catchments through the application of local values.
New parameter sets can be inserted and values of individual parameters can be edited in the Parameters Kinematic Wave Editor. This can be activated at Catchments|Parameters Kinematic Wave.
MIKE+ comes with a Default parameter set (-DEFAULT-). The User can insert any number of parameter sets and edit them as needed.
Figure: The Kinematic Wave Parameter Sets editor (Catchments|Parameters Kinematic Wave)
A full overview of the editor fields and corresponding database attributes is provided in the table below.
| Edit field | Description | Used or required by simulations | Field name in datastructure |
|---|---|---|---|
| Parameter set ID | Parameter set identifier | Yes | MUID |
| Wetting (five fields) | Wetting initial loss on various types of surfaces | Yes | WetSteep, WetFlat, WetSmall, WetMedium, WetLarge |
| Storage (four fields) | Storage initial loss on various types of surfaces | Yes | StorageFlat, StorageSmall, StorageMedium, StorgaeLarge |
| Maximum (three fields) | Horton’s maximum infiltration capacity on various types of surfaces | Yes | InfMaxSmall, InfMaxMedium, InfMaxLarge |
| Minimum (three fields) | Horton’s minimum infiltration capacity on various types of surfaces | Yes | InfMinSmall, InfMinMedium, InfMinLarge |
| Wet Condition (three fields) | Horton’s exponent for wet conditions on various types of surfaces | Yes | InfExpWetSmall, InfExpWetMedium, InfExpWetLarge |
| Dry Condition (three fields) | Horton’s exponent for dry conditions on various types of surfaces | Yes | InfExpDrySmall, InfExpDryMedium, InfExpDryLarge |
| Formulation | Selects whether the Manning values are expressed as Manning (M) or Manning (n) | Yes | FricTypeNo |
| Manning (five fields) | Manning number for various types of catchment surfaces | Yes | ManningSteep, ManningFlat, ManningSmall, ManningMedium, ManningLarge |
Table: Overview of the Kinematic Wave Parameter Set Attributes (Table msm_HParB)