ConceptualInfiltration Class Reference

Connects the surfacewater and the most upper layer using a simplified infiltration model suitable for conceptional models. More...

Inheritance diagram for ConceptualInfiltration:

Collaboration diagram for ConceptualInfiltration:

Detailed Description

Connects the surfacewater and the most upper layer using a simplified infiltration model suitable for conceptional models.

\[ q_{inf} = \left(1-e_{sat}\left(W, W_0\right)\right) q_{inf,pot} \]

where:

• \(q_{inf}\) Effective infiltration from surface to first layer (soil)
• \(e_{sat}(W, W_0)\) Saturation excess, ranging from 0 (nowhere saturated soil layer) to 1 (fully saturated). \(W\) is the average wetness calculated from the soil layer, \(W_0\) is a parameter denoting the wetness, where 50% of the layer is saturated using a sigmoidal function:
  • \(e_{sat}(W_{soil}, W_0) = \left(1+e^{-(W-W_0)0.2(1-W_0)}\right)^{-1}\)
• \(q_{inf,pot}\) is the potential infiltration, given by the incoming fluxes limited by the saturated conductivity:
  • \(q_{inf,pot} = \min(q_{in}, K_{sat} A)\)
    • \(q_{in}\) Sum of incoming fluxes to the surfacewater in \(m^3/day\)
  • \(K_{sat}\) Saturated conductivity in \(m/day\)
  • \(A\) Cell area in \(m^2\)

Public Member Functions
	ConceptualInfiltration (cmf::upslope::SoilLayer::ptr soilwater, cmf::water::flux_node::ptr surfacewater, real W0=0.9)
	Creates the connection between surfacewater and first soil layer.
real	conc (cmf::math::Time t, const cmf::water::solute &_Solute)
	Returns the concentration of the flux.
flux_node::ptr	get_target (const flux_node &inquirer)
	Returns the other end of a connection than the asking end.
flux_node::ptr	get_target (int index) const
	With index 0, the left node is returned, with index 1 the right node of the connection.
real	get_tracer_filter ()
	A value ranging from 0 to 1 to filter tracers out of the water flux.
real	get_tracer_filter (solute S)
	A value ranging from 0 to 1 to filter tracers out of the water flux.
bool	kill_me ()
	Deregisters this connection from its nodes. Returns true if only one reference is left.
flux_node::ptr	left_node () const
	Returns the left node of this connection.
real	q (const flux_node &inquirer, cmf::math::Time t)
	Returns the current flux through a connection. Negative signs mean out of the inquirer, positive are inflows to the inquirer.
void	refresh (cmf::math::Time t)
	Performes a new calculation of the flux.
flux_node::ptr	right_node () const
	returns the right node of this connection
void	set_tracer_filter (real value)
	A value ranging from 0 to 1 to filter tracers out of the water flux.

Public Attributes
const std::string	type
	A string describing the type of the connection.
real	W0
	Wetness at which only 50% of the potential infiltration \(p_{inf,pot}\).

Constructor & Destructor Documentation

ConceptualInfiltration()

ConceptualInfiltration	(	cmf::upslope::SoilLayer::ptr	soilwater,
		cmf::water::flux_node::ptr	surfacewater,
		real	W0 = 0.9 )

Creates the connection between surfacewater and first soil layer.

Parameters

soilwater	the infiltration target
surfacewater	the infiltration source
W0	the 50% saturation value

Member Function Documentation

conc()

real conc ( cmf::math::Time t, const cmf::water::solute & _Solute )

inherited

Returns the concentration of the flux.

If not overridden, it returns the concentration of the source of the flux (direction depending)

get_tracer_filter()

real get_tracer_filter ( )

inherited

A value ranging from 0 to 1 to filter tracers out of the water flux.

1.0 is no filter and 0.0 means no solute is crossing this connection

set_tracer_filter()

void set_tracer_filter ( real value )

inherited

A value ranging from 0 to 1 to filter tracers out of the water flux.

1.0 is no filter and 0.0 means no solute is crossing this connection