HydPy-Test-Discontinuous (test model for discontinuous ODEs)

test_discontinous serves to test numerical integration strategies only. It can be seen from two perspectives. On the one hand, it implements a simple discontinuous equation, which causes trouble for numerical integration algorithms. On the other hand, it describes simple storage with a constant loss over time as long as some storage content is left. The loss rate Q and the initial storage content S can be set as required.

Method features

class hydpy.models.test_discontinous.Model[source]

Bases: ELSModel

HydPy-Test-Discontinuous (test model for discontinuous ODEs).

The following methods define the relevant components of a system of ODE equations (e.g. direct runoff):

  • Calc_Q_V2 Calculate the actual storage loss.

The following methods define the complete equations of an ODE system (e.g. change in storage of fast water due to effective precipitation and direct runoff):

  • Calc_S_V1 Calculate the actual storage content.

DOCNAME = ('Test-Discontinuous', 'test model for discontinuous ODEs')
REUSABLE_METHODS = ()

Parameter features

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

Bases: ControlParameters

Control parameters of model test_discontinous.

The following classes are selected:

  • K Storage coefficient [1/T].

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

Bases: SolverParameters

Solver parameters of model test_discontinous.

The following classes are selected:

  • AbsErrorMax Absolute numerical error tolerance [mm/T].

  • RelErrorMax Relative numerical error tolerance [1/T].

  • RelDTMin Smallest relative integration time step size allowed [-].

  • RelDTMax Largest relative integration time step size allowed [-].

Sequence features

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

Bases: FluxSequences

Flux sequences of model test_discontinous.

The following classes are selected:

  • Q Storage loss [mm/T]

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

Bases: StateSequences

State sequences of model test_discontinous.

The following classes are selected:

  • S Storage content [mm].