DRWmodel-class: DRW model results formal class

In CJBarry/DRW: Dynamic Random Walk

Description

DRW model results formal class

Value

DRWmodel S4 object

Slots

time

numeric; time values of the time step divides, including start and end of model

plume

data.table with columns:
$ts (int, key): DRW time step
$x, $y, $z (num): 3D position
$L (int): MODFLOW layer
$zo (num): z-offset within layer (0: cell base, to 1: top of groundwater in cell (see get.wtop.nc))
$m (num): particle mass; mobile particle swarm

sorbed

data.table, (columns as for plume); immobile particles

release

data.table with columns:
$x, $y, $L, $zo: as with plume
$J (list): list of functions giving flux in terms of time
the source term release at each source location

fluxout

data.table with columns:
$ts (int, key): DRW time step
$C, $R, $L (int): MODFLOW cell reference
$J_out (num): rate of mass loss in cell during this time step
outflux of mass from particles by MODFLOW cell reference and DRW time step

lost

matrix [ndrts, 7]; mass lost from model other than in sinks; each named column refers to mass lost from each edge of the MODFLOW model (top, left, right, bottom), failed source release due to release into an inactive or dry MODFLOW cell, degraded in first-order reactions, or other

dispersion

list with elements:
$D named numeric [2 or 3]: longitudinal, transverse (and vertical) dispersivities (units of length) if vdepD or dispersion coefficients (units of length^2/time) otherwise
$vdepD logical [1]: see above
$`3D` logical [1]: TRUE if a 3D dispersion tensor is used

reactions

list with elements:
$Rf numeric [1]: retardation factor
$lambda numeric [1]: first-order reactive decay constant (equivalent to log(2)/half-life)
$decaysorbed logical [1]: whether first-order reactive decay applies to immobile solute mass

porosity

numeric array [1], [NLAY] or [NCOL, NROW, NLAY]; effective porosity of each MODFLOW cell, either uniform, by layer or by cell

coalescing

list with elements:
$cd named numeric [2]: coalescing search radii horizontally and vertically
$mm numeric [1]: minimum mass of particles after coalescing
$maxnp integer [1]: maximumn number of particles after coalescing
see (coalesce) for more details

description

character string; description of the model run for future reference

MFinfo

character string matrix[number of MODFLOW models, 3]; descriptive attributes, including date, of the MODFLOW NetCDFs, for future reference, so that it is clear what flow field (and what version) was used in the model

run.timings

POSIXct []; summary of simulation timings, to give date of model run and for performance analysis

CJBarry/DRW documentation built on May 6, 2019, 9:25 a.m.