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According to the ANSYS manual, "Smart element sizing (SmartSizing) is a meshing feature that creates initial element sizes for free meshing operations. SmartSizing gives the mesher a better chance of creating reasonably shaped elements during automatic mesh generation ... The SmartSizing algorithm first computes estimated element edge lengths for all lines in the areas or volumes being meshed. The edge lengths on these lines are then refined for curvature and proximity of features in the geometry." To turn on SmartSizing, check the box next to Smart Size and drag . Drag the slider to a size of 4 to get a finer mesh than the default.

In order to have a little more control over what mesh ANSYS creates for us, we will set the starting element size for SmartSizing rather than use the default. Smartsizing will take this starting element size and refine it modify/vary it over the geometry to account for curvature and corners in the geometry. Under Size Controls, click the Set button next to Global. Enter an element edge length of 0.12 and click OK.

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