Changes between Version 1 and Version 2 of GlobalDataExplained

Timestamp:

06/02/11 13:21:02 (14 years ago)

Author:

Brandon Shroyer

Comment:

—

GlobalDataExplained

@@ -5 +5 @@
 Arguably the most important data file in AstroBEAR 2.0, {{{global.data}}} contains global domain and solver data.  This data is broken up into several namelists, which are read in by different sections of the code.
 
+[[BR]]
 == !GlobalData ==
 
+The {{{GlobalData}}} namelist contains global parameters.  These parameters hold for the entire problem domain, and many of them actually describe it.
+
+ * '''{{{nDim}}}''':  The number of dimensions in the problem.  For AstroBEAR, this should be either {{{2}}} or {{{3}}}, since AstroBEAR only does 2D and 3D problems.  A 1D problem can be approximated with a long, narrow 2D problem domain.
+
+ * '''{{{MaxLevel}}}''': The maximum refinement level for this simulation.  {{{MaxLevel}}} is the number of refinement levels over the base grid (so a {{{MaxLevel}}} of {{{0}}} is fixed-grid). This value can never be less than {{{0}}}, and if it is greater than {{{0}}} then the problem is an AMR problem.
+
+ * '''{{{MinimumGridPoints}}}''': The minimum number of cells per dimension that a grid can have.  Since a grid must have at least one cell, {{{MinimumGridPoints}}} should never be less than {{{1}}}.  A low {{{MinimumGridPoints}}} allows AstroBEAR to create smaller grids, which lets it refine more efficiently.  Low {{{MinimumGridPoints}}} values also run the risk of creating a lot more grids, which will boost administrative and communication costs.
+
+ * '''{{{nDomains}}}''': The number of domains comprising the problem domain.  Unless you have a specific reason for wanting multiple domains in your problem, it is best to leave this set to {{{1}}}.
+
+[[BR]]
 == !LevelData ==