Horton Class

Horton class holds the parameters used for calculation infiltration using the Hortons infiltration.

Definition

Namespace: DHI.Mike1D.RainfallRunoffModule
Assembly: DHI.Mike1D.RainfallRunoffModule (in DHI.Mike1D.RainfallRunoffModule.dll) Version: 24.0.0.0 (11.1.1.1111)
C#
public class Horton : ICatchmentInfiltrationCalculator, IModelStateReadWrite
Inheritance
Object    Horton
Implements
IModelStateReadWrite, ICatchmentInfiltrationCalculator

Constructors

HortonInitializes a new instance of the Horton class

Properties

HortonMode Horton mode can be Wet or Dry. See HortonMode

State variable. Should not be updated manually.

Initially: Wet

IntegratedHorton True if the Integrated Horton method is used in the calculation for infiltration. Default: False

Methods

CalculateInfiltration Take a Horton Timestep, returning the Infiltration Depth of the time step.

If currentDepth and netRainfallrate is zero, a dry mode time step is performed, otherwise if any of those is larger than zero, a wet mode time step is performed.

The currentDepth is also used as depth available for infiltration, in case of IntegratedHorton is set, i.e. the returned infiltration depth is limited by this parameter.
Clone Clone the current ICatchmentInfiltrationCalculator.
EqualsDetermines whether the specified object is equal to the current object.
(Inherited from Object)
FinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object)
GetHashCodeServes as the default hash function.
(Inherited from Object)
GetTypeGets the Type of the current instance.
(Inherited from Object)
MemberwiseCloneCreates a shallow copy of the current Object.
(Inherited from Object)
Prepare Reset horton parameters
ReadState Read state and apply to module. Returns true if state was successfully read.
SwitchHortonModeTo Switch Horton mode. Automatically calculating new Horton times, i.e. when switching from dry to wet mode, the value of Twet is calculated to match the same infiltration as the current value of Tdry, and vice versa.
ToStringReturns a string that represents the current object.
(Inherited from Object)
WriteState Write current state of module

Fields

F0 Infiltration rate at start Unit: [m/s]
Fc Infiltration rate at end Unit: [m/s]
Ft Infiltration rate at current time step. Unit: [m/s] Computational variable.

This is stored and used when switching from dry to wet mode, in order to get a smooth transition of infiltration rates.

Kdry Time constant for dry period (inverse Horton's equation) Unit: [1/s]
Kwet Time constant for wet period (horton's exponent) Unit: [1/s]
Tdry Time of the dry Horton mode. Applicable only when HortonMode is Dry

When approaching infinity, the start infiltration rate has been recovered

Unit: [s] State variable.
Twet Time of the wet Horton mode. Applicable only when HortonMode is Wet

A value of zero matches the start infiltration rate.

Unit: [s] State variable.

See Also