Click or drag to resize

Horton Class

Horton class holds the parameters used for calculation infiltration using the Hortons infiltration.
Inheritance Hierarchy
SystemObject
  DHI.Mike1D.RainfallRunoffModuleHorton

Namespace:  DHI.Mike1D.RainfallRunoffModule
Assembly:  DHI.Mike1D.RainfallRunoffModule (in DHI.Mike1D.RainfallRunoffModule.dll) Version: 19.0.0.0 (11.1.1.1111)
Syntax
public class Horton : ICatchmentInfiltrationCalculator, IModelStateReadWrite

The Horton type exposes the following members.

Constructors
  NameDescription
Public methodHorton
Initializes a new instance of the Horton class
Top
Properties
  NameDescription
Public propertyHortonMode
Horton mode can be Wet or Dry. See HortonMode

State variable. Should not be updated manually.

Initially: Wet

Public propertyIntegratedHorton
True if the Integrated Horton method is used in the calculation for infiltration. Default: False
Top
Methods
  NameDescription
Public methodCalculateInfiltration
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.
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Public methodPrepare
Reset horton parameters
Public methodReadState
Read state and apply to module. Returns true if state was successfully read.
Public methodSwitchHortonModeTo
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.
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
Public methodWriteState
Write current state of module
Top
Fields
  NameDescription
Public fieldF0
Infiltration rate at start Unit: [m/s]
Public fieldFc
Infiltration rate at end Unit: [m/s]
Public fieldFt
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.

Public fieldKdry
Time constant for dry period (inverse Horton's equation) Unit: [1/s]
Public fieldKwet
Time constant for wet period (horton's exponent) Unit: [1/s]
Public fieldTdry
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.
Public fieldTwet
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.
Top
See Also