HydPy-Rconc-Nash (Nash-Cascade runoff concentration)

rconc_nash is a submodel that supports its main model by calculating the runoff concentration using the storage cascade approach.

See the integration tests of the application model hland_96p, which use rconc_nash as a submodel.

class hydpy.models.rconc_nash.Model

Bases: Sub_RConcModel, RConcModel_V1

HydPy-Rconc-Nash (Nash-Cascade runoff concentration).

The following interface methods are available to main models using the defined model as a submodel:

• Set_Inflow_V1 Set the runoff concentration input in mm/T.

• Determine_Outflow_V2 Calculate the linear storage cascade output (state-space approach).

• Get_Outflow_V1 Get the previously calculated runoff concentration output in mm/T.

DOCNAME: DocName = ('Rconc-Nash', 'Nash-Cascade runoff concentration')

OBSERVER_METHODS: ClassVar[tuple[type[Method], ...]] = ()

get_waterbalance(initial_conditions: dict[str, dict[str, float | ndarray[tuple[Any, ...], dtype[float64]]]]) → float

Return the water balance after the submodel has been executed.

REUSABLE_METHODS: ClassVar[tuple[type[ReusableMethod], ...]] = ()

cymodel: CyModelProtocol | None

parameters: parametertools.Parameters

sequences: sequencetools.Sequences

masks: masktools.Masks

class hydpy.models.rconc_nash.ControlParameters(master: Parameters, cls_fastaccess: type[FastAccessParameter] | None = None, cymodel: CyModelProtocol | None = None)

Bases: SubParameters

Control parameters of model rconc_nash.

The following classes are selected:

• RetentionTime() Retention time of the linear storage cascade [T].

• NmbStorages() Number of storages of the linear storage cascade [-].

• NmbSteps() Number of internal computation steps per simulation time step [-].

class hydpy.models.rconc_nash.DerivedParameters(master: Parameters, cls_fastaccess: type[FastAccessParameter] | None = None, cymodel: CyModelProtocol | None = None)

Bases: SubParameters

Derived parameters of model rconc_nash.

The following classes are selected:

• KSC() Coefficient of the individual storages of the linear storage cascade [1/T].

• DT() Relative length of each simulation step [-].

class hydpy.models.rconc_nash.FluxSequences(master: Sequences, cls_fastaccess: type[TypeFastAccess_co] | None = None, cymodel: CyModelProtocol | None = None)

Bases: FluxSequences

Flux sequences of model rconc_nash.

The following classes are selected:

• Inflow() Inflow [mm/T].

• Outflow() Outflow [mm/T].

class hydpy.models.rconc_nash.StateSequences(master: Sequences, cls_fastaccess: type[TypeFastAccess_co] | None = None, cymodel: CyModelProtocol | None = None)

Bases: StateSequences

State sequences of model rconc_nash.

The following classes are selected:

• SC() Storage cascade for runoff concentration [mm].