Time varying hydraulic conductivity

This set of extra parameters allows you to define the horizontal and vertical hydraulic conducivity as time varying parameters. This is especially useful in permafrost conditions or in mining applications.

The time varying hydraulic conductivity can be specified for any or all SZ lay­ers. For each layer with a time varying value, a time varying dfs2 file must be specified with an Item Type = “Conductivity”.

Each time varying layer, requires all three parameters: a Boolean “on”, the file name, and the item number in the file.

Layers are number from the top down, starting with 1 at the top.

Parameter Name

Type

Value

time varying horizontal conductiv­ity

Boolean

On

One set of 3 parameters for each SZ layer that has a time varying hydraulic conductivity

time varying horizontal conductiv­ity layer 1

Boolean

On

horizontal conductivity layer 1 dfs2 file name

file name

.dfs2 file

Item type: Conductivity

horizontal conductivity layer 1 item number

integer

item number in dfs2 file, greater than zero

Optional:

mean step accumulated horizon­tal conductivity

Boolean

On

Parameter Name

Type

Value

time varying vertical conductivity

Boolean

On

One set of these 3 parameters for each SZ layer that has a time varying hydraulic conductivity

time varying vertical conductivity layer 1

Boolean

On

vertical conductivity layer 1 dfs2 file name

file name

.dfs2 file

Item type: Conductivity

vertical conductivity layer 1 item number

integer

item number in dfs2 file, greater than zero

Optional:

mean step accumulated vertical conductivity

Boolean

On

By default, the Time Series Types (V1 p. 147) are Instantaneous, but there is an extra option that allows you to used Mean Step Accumulated values if you want. The use of Mean Step Accumulated does not change the meaning of the item, but changes the way the values are interpolated.

note00039.jpg 

Note: The code does not check for the time series type.