8.3. Input Data Files
303
NCB
NTB
the total number of given concentration boundary nodes.
NS
NTS
NOBW
NOBT
ISO
the total number of times for which the boundary values are
changed.
the total number of zones for a distributed sink/source.
the total number of time periods during which the distributed
sinks/sources are constant.
the total number of observation weHs.
the total number of observation times.
setting ISO = 0 for isotropie aquifers, setting ISO = 1 for anisotropie aquifers when only solving groundwater flow problems.
Input data in the file DATAG include:
X
the x coordinate of each node.
Y
the y coordinate of each node.
TR
the top-rock elevation of each node. For an unconfined aquifer, it
is the elevation of ground surface. When the head is higher than
TR at anode, the aquifer is considered to be confined at that
location. Otherwise, be unconfined.
BR
the bed-rock elevation of each node.
UM
the node numbers of each element.
NPZON the zone number of each element for distributed parameters.
NSZON the zone number of each element for distributed sinks/sources.
Input data in the file DATAI include:
HOO the initial head of each node.
COO the initial concentration of each node.
Input data in the file DATAB include:
TIME
NODE
HEAD
CONCEN
the time at which the values of given boundary head and given
boundary concentration are measured.
the node number of a boundary node.
the measured value of head at a boundary node.
the measured value of concentration at a boundary node.
Note that the boundary values of an arbitrary time used in the program
are calculated by linear interpolation. Thus, the first value of TIME must be
o (initial time), and the boundary values must coincide with their initial
values (as given in the file DA TAl). The final value of TIME must be larger
than or equal to the total simulation period.
Input data in the file DATAW include:
TIME
the time at which the extraction and injection rates or the
concentration of injected water change their values.
ELEMENT the element number where a weIl is located.
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