GMS:GNC Package: Difference between revisions
From XMS Wiki
Jump to navigationJump to search
No edit summary |
|||
| (7 intermediate revisions by 2 users not shown) | |||
| Line 9: | Line 9: | ||
}}</ref> | }}</ref> | ||
GMS provides an interface to the GNC package. The package can be turned on in the [[GMS:MODFLOW_Packages_Supported_in_GMS|''MODFLOW Packages'']] dialog, accessible from the [[GMS:Global_Options/Basic_Package|''MODFLOW Global/Basic Package'']] dialog. The package dialog can be accessed from the main [[GMS:MODFLOW_Commands|''MODFLOW'' menu]] or by right-clicking on the MODFLOW item in the [[GMS:Project Explorer|Project Explorer]]. | GMS provides an interface to the GNC package. The package can be turned on in the [[GMS:MODFLOW_Packages_Supported_in_GMS|''MODFLOW Packages'']] dialog, accessible from the [[GMS:Global_Options/Basic_Package|''MODFLOW Global/Basic Package'']] dialog. The package dialog can be accessed from the main [[GMS:MODFLOW_Commands|''MODFLOW'' menu]] or by right-clicking on the "[[File:MODFLOW Folder.svg|16 px]] MODFLOW" item in the [[GMS:Project Explorer|Project Explorer]]. | ||
[[Image:ghostnodes.png|frame|none|Ghost node conceptualization for nested grids.<ref name="mfusg"/>]] | [[Image:ghostnodes.png|frame|none|Ghost node conceptualization for nested grids.<ref name="mfusg"/>]] | ||
== GNC Package Dialog== | == GNC Package Dialog== | ||
[[File:GNC Package.png|thumb| | [[File:GNC Package.png|thumb|450 px|The ''GNC Package'' dialog]] | ||
Enter the ghost node data by hand, or allow GMS to compute the data by clicking the '''Generate Ghost Node Data''' button. Clicking the button causes GMS to overwrite whatever is in the GncNodes table with the ghost node data calculated using an algorithm which calculates the locations of ghost nodes and computes the AlphaJ values based on the distances from ghost nodes to adjacent cells. Ghost node locations are calculated using the perpendicular bisector of the face between adjacent cells and its intersection with the lines connecting cell centers as illustrated in the figure below. The algorithm considers only the horizontal relationship of cells when locating ghost nodes. Thus, if the figure above is considered to be in plan view, the ghost node will be located as shown, but if it is considered to be in a front or side view with a subdivided layer on the right, no ghost node will be created. | Enter the ghost node data by hand, or allow GMS to compute the data by clicking the '''Generate Ghost Node Data''' button. Clicking the button causes GMS to overwrite whatever is in the GncNodes table with the ghost node data calculated using an algorithm which calculates the locations of ghost nodes and computes the AlphaJ values based on the distances from ghost nodes to adjacent cells. Ghost node locations are calculated using the perpendicular bisector of the face between adjacent cells and its intersection with the lines connecting cell centers as illustrated in the figure below. The algorithm considers only the horizontal relationship of cells when locating ghost nodes. Thus, if the figure above is considered to be in plan view, the ghost node will be located as shown, but if it is considered to be in a front or side view with a subdivided layer on the right, no ghost node will be created. | ||
| Line 34: | Line 34: | ||
[[Category:MODFLOW]] | [[Category:MODFLOW]] | ||
[[Category:MODFLOW Packages]] | [[Category:MODFLOW Packages]] | ||
[[Category:MODFLOW Dialogs]] | [[Category:MODFLOW-USG Dialogs]] | ||
[[Category:MODFLOW-USG|GNC]] | |||
[[Category:External Links]] | [[Category:External Links]] | ||
