GMS:SUB Package: Difference between revisions
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The ''Options'' tab includes general SUB package options, options for saving and restarting Dstart and DHC values for delay interbeds, and material values for delay interbeds. The options are as follows: | The ''Options'' tab includes general SUB package options, options for saving and restarting Dstart and DHC values for delay interbeds, and material values for delay interbeds. The options are as follows: | ||
*'''NN''' – Number of nodes used to discretize the half space to approximate the head distributions in systems of delay interbeds. | *'''NN''' – Number of nodes used to discretize the half space to approximate the head distributions in systems of delay interbeds. Defaults to zero when there aren't any delay interbed layers specified. | ||
*'''AC1''' – Is an acceleration parameter. Used to predict the aquifer head at the interbed boundaries on the basis of the head change computed for the previous iteration. Values may range from 0.0 to 0.6. | *'''AC1''' – Is an acceleration parameter. Used to predict the aquifer head at the interbed boundaries on the basis of the head change computed for the previous iteration. Values may range from 0.0 to 0.6. | ||
*'''AC2''' – Is an accleration parameter. It is a multiplier for the head changes to compute the head at a new iteration. Values may range from 1.0 to 2.0. | *'''AC2''' – Is an accleration parameter. It is a multiplier for the head changes to compute the head at a new iteration. Values may range from 1.0 to 2.0. | ||
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*'''IDSAVE''' – Turning on this toggle causes a file to be saved in the MODFLOW model folder which can be used for IDREST values for a future MODEL run. | *'''IDSAVE''' – Turning on this toggle causes a file to be saved in the MODFLOW model folder which can be used for IDREST values for a future MODEL run. | ||
*'''IDREST''' – Turning on this toggle allows a file to be entered which is used as restart values for delay interbeds in place of Dstart and DHC values. | *'''IDREST''' – Turning on this toggle allows a file to be entered which is used as restart values for delay interbeds in place of Dstart and DHC values. | ||
*'''NMZ''' – Sets the number of SUB package material values to be entered in the spreadsheet below. | *'''NMZ''' – Sets the number of SUB package material values for the delay interbeds to be entered in the spreadsheet below. Defaults to zero when the number of delay interbeds (NDB) is zero (i.e. delay interbed layers have not been created). | ||
*'''Vertical k''' – Vertical hydraulic conductivity for a delay interbed material. | *'''Vertical k''' – Vertical hydraulic conductivity for a delay interbed material. | ||
*'''Elastic spec. storage''' – Elastic specific storage for a delay interbed material. | *'''Elastic spec. storage''' – Elastic specific storage for a delay interbed material. | ||
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====No Delay Interbed Arrays==== | ====No Delay Interbed Arrays==== | ||
*'''HC''' – Array specifying the preconsolidated head of the interbed. For a model with an initial steady state stress period, model cells in which specified preconsolidated head is above the steady state head, the HC value will be set to the steady state head. Has units of length. | |||
*'''Sfe''' – Array specifying the elastic skeletal storage coefficient. | |||
*'''Sfv''' – Array specifying the inelastic skeletal storage coefficient. | |||
*'''COM''' – Array specifying the starting compaction. Has units of length. | |||
====Delay Interbed Arrays==== | ====Delay Interbed Arrays==== | ||
*'''RNB''' – Array specifying the n-equiv of the interbed. This array is also used to define the areal extent of the interbed. For cells beyond the extent of the interbed enter a value less than 1.0. | |||
*'''Dstart''' – Array specifying the starting head. Has units of length. | |||
*'''DHC''' – Array specifying the preconsolidated head. For a model with an initial steady state stress period, model cells in which specified preconsolidated head is above the steady state head, the HC value will be set to the steady state head. Has units of length. | |||
*'''DCOM''' – Array specifying the starting compaction. Has units of length. | |||
*'''DZ''' – Array specifying the equivalent thickness of the interbed. | |||
[[File:MODFLOW-SUB-NoDelay.jpg|thumb|none|center|500 px|The ''MODFLOW SUB Package'' dialog showing the ''No Delay Interbed'' tab. The ''Delay Interbed'' tab has an identical layout as the ''No Delay Interbed'' tab.]] | [[File:MODFLOW-SUB-NoDelay.jpg|thumb|none|center|500 px|The ''MODFLOW SUB Package'' dialog showing the ''No Delay Interbed'' tab. The ''Delay Interbed'' tab has an identical layout as the ''No Delay Interbed'' tab.]] | ||
==External Links== | |||
MODFLOW-2000 [http://pubs.usgs.gov/of/2003/ofr03-233/pdf/ofr03233.pdf User Guide to the SUB Package] | |||
{{Navbox GMS}} | {{Navbox GMS}} | ||
[[Category:MODFLOW]] | [[Category:MODFLOW]] | ||
[[Category:MODFLOW-USG]] | |||
[[Category:MODFLOW Packages]] | |||
[[Category:MODFLOW Dialogs]] | |||
[[Category:External Links]] |