JarvisMacroFlow Class Reference

A physically based macropore to macropore connection according to Jarvis & Leeds-Harrison 1987, JSS. More...

Inherits BaseMacroFlow.

Detailed Description

A physically based macropore to macropore connection according to Jarvis & Leeds-Harrison 1987, JSS.

\[q_{i->j} [m/s]= \rho \frac G {12\eta} w^2 \frac{e_v-e_r}{1-e_r} S_{c,i}^\beta\ (1-S_{c,j})\]

where:

• \(q_{i->j}\) the flow from macro pore layer i to macropore layer j
• \(\rho=10^{-3} kg/m^3\) - the density of water
• \(G=9.81 m/s^2\) the earth acceleration
• \(\eta=1.0 kg/(m s)\) the viscosity of water (at 20 degC)
• \(w [m]\) the crack width, a function of water content and crack distance
• \(e_v [-]\) the crack porosity
• \(e_r [-]\) crack por
• \(S_c [-]\) the crack saturation of layer i resp. j
• \(\beta [-]\) a conceptional exponent to shape the flow reaction

Public Member Functions
	JarvisMacroFlow (cmf::water::WaterStorage::ptr left, cmf::water::flux_node::ptr right, real beta=1., real porefraction_r=0.0)
	Constructs the connection.
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.

Constructor & Destructor Documentation

JarvisMacroFlow()

JarvisMacroFlow	(	cmf::water::WaterStorage::ptr	left,
		cmf::water::flux_node::ptr	right,
		real	beta = 1.,
		real	porefraction_r = 0.0 )

Constructs the connection.

Parameters

left,right	the connected macropores
beta	User defined parameter for the swelling reaction
porefraction_r	Porefraction at which flow starts. For swelling soils that are closing completely th

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