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--- wiki:sns:intactgh:solver_settings [2023/07/07 14:47] – [Solver Settings] eli
+++ wiki:sns:intactgh:solver_settings [2023/08/15 08:28] (current) – eli
@@ Line 6: / Line 6: @@
 The solver settings block requires setting either:
-  * the grid cell size of the simulation or the grid resolution of the simulation
+  * S: the grid cell size of the simulation
+  * Res: the grid resolution (Res) of the simulation
+//Note: If both resolution and cell size are set, cell size will be used and resolution will be ignored//
 The solver settings block accepts the following optional inputs:
-  * whether to use a direct solver (the default) or an iterative solver
+  * St: whether to use a direct solver (the default) or an iterative solver
-  * the finite element type where 1 selects linear elements (the default) and 2 selects quadratic elements
+  * B: the finite element type where 1 selects linear elements (the default) and 2 selects quadratic elements
-  * path to custom location to store solutions
+  * SD: path to custom location to store solutions
-  * number of threads for the solver to use
+  * N: number of threads for the solver to use
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-{{ :wiki:sns:intactgh:solver_settings.png?200}}
+{{ :wiki:sns:intactgh:solver_settings.png }}
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-==== FAQ: ====
+For hints on how to set these quantities, see
-When should I use linear elements and when should I use quadratic elements?
+❓[[wiki:sns:intactgh:faq#Solver Settings|Frequently Asked Questions]]
-  * Regardless of the scenario, either will work. Generally, quadratic elements converge to a good answer quicker and with few elements, but it depends on the simulation scenario.
-  * For geometries that undergo bending, quadratic elements perform better.
-  * It is important to note that with quadratic elements, many fewer elements are needed to compute an accurate solution. Having more elements increases computation time, so start with a low resolution or high cell size and increase the resolution/decrease cell size to improve accuracy.
-How do I know what resolution/cell size to set?
-  * To accurately capture small features with linear elements, set the cell size to 1/3 the thickness of that feature.
-  * For quadratic elements, a cell size equal to the thickness of the small feature is sufficient.
-  * Low resolutions (<1000) will generally solve problems quickly. Intact can handle a resolution of 10 million elements (or more!), so start small, and gradually increase the resolution until consistent results are obtained.