HPx

reactive_transport_output        defines options for generating output. The user defines elements over which output variables (defined by selected_output and user_punch) are summed.

Definition

REACTIVE_TRANSPORT_OUTPUT

-totalsum

-horizon

-layer

-node

-depth

-profile

Additional information

Sums of variables over a region of the domain

The identifiers -horizon,-layer, -node, and -depth indicate the region in the simulation domain over which the sum of a variable is taken. The exact formula of the sum depends on the variable. Following types are available:

Simple sum

The variable that is summed is simply the value in the output, e.g. for solid phases (with -equilibrium_phases in selected_output), this is moles / dm³.

Sum weighted by water content

The variable that is summed is the value in the output multiplied with the water content, e.g. for total concentrations of aqueous components (with -totals in selected_output), this is (moles / L water) * (L water / dm³) with moles / dm³ as final unit.

Sum weigthed by air content

Series Sum

This sum is only available for variables defined by user_punch. It uses the formula for calculating the overall conductance for a number of conductance in series. It is usefull to calculate effective hydraulic conductivities or diffusivities of heterogeneous layers. 

For more details: see -integralsum

For the one-dimensional variant, the summed variable is obtained by:

where Nn is the number of nodes, and x is the distance in the unit of the transport problem (UL). The unit of Σvar is thus M UL / dm³ with M the unit of var. Note that for example, for a concentration, var is concentration times water content.

The next table shows what summed variable is used for different variables in selected_output. The type for variables defined in user_punch are defined by the user in -integralsum.

Alternatives

RT_OUTPUT