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--- wiki:sns:intactgh:surface_loads [2023/10/24 20:40] – goldy
+++ wiki:sns:intactgh:surface_loads [2025/08/13 10:00] (current) – goldy
@@ Line 4: / Line 4: @@
 ====== Surface Loads ======
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-Surface loads are applied to faces of the components participating in the simulation by connecting to the Loads input on the stress solver component.
+Surface loads are applied to faces of the components participating in the simulation by connecting to the Loads input on the stress solver component. ⚠️Also, refer to [[wiki:sns:intactgh:lists|Using lists for Intact components]] for explanation of how list input works with Load Blocks.
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 {{ :wiki:sns:intactgh:stress_block_loads.png?150 }}
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 ===== Vector Force =====
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-A "Pressure" load is a surface load specified in terms of force per unit area. Positive pressures push into the surface, negative pressure pull.
+A "Pressure" load is a surface load specified in terms of force per unit area that is normal to the surface. Positive pressures push into the surface, negative pressure pull.
 A Pressure Load requires two inputs:
@@ Line 70: / Line 70: @@
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-A “Hydrostatic” load is a spatially varying pressure as experienced by the walls of a pool due to the weight of the water pressing against them. The pressure at any point depends on the density of the water, increasing from a value of zero at the water surface to a maximum at the deepest point. Hydrostatic loads are specified in Intact.Simulation by specifying an oriented plane for the fluid surface and the density of the fluid in question. The plane's normal indicates the direction of increasing depth.
+A “Hydrostatic” load is a spatially varying pressure as experienced by the walls of a pool due to the weight of the water pressing against them. The pressure at any point depends on the density of the water, increasing from a value of zero at the water surface to a maximum at the deepest point.
-A Torque load requires three inputs:
+A Hydrostatic load requires three inputs:
   * the geometry of the surfaces where the load is applied
-  * the axis of the torque (a line segment)
+  * a point on the surface of the fluid (fluid depth is assumed in the -Z direction)
-  * the value of the torque
+  * specific gravity of the fluid (dimensionless, SG = 1 for water)
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-{{:wiki:sns:intactgh:hydrostatic_load_block.png|}}
+{{ :wiki:sns:intactgh:hydrostatic_load_block.png?200 }}
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