Max/Min Volume, Max/Min Surface, Max/Min Line, Max/Min Point
Use the Max/Min Volume (), Max/Min Surface (2D: ); 3D: ), Max/Min Line (2D: ); 3D: ), and Max/Min Point (2D: ; 3D: ) plots to plot the maximum and minimum values of an expression and the points there they are attained within the geometry.
When plotting the maximum and minimum value, an associated table appears in the Table window (underneath the Graphics window if using the default COMSOL Desktop layout). The table contains the maximum and minimum values along with the coordinates for the corresponding locations. The coordinate columns’ titles contain the space variable names from the dataset, if you use a Cut Plane dataset, for example. Add Deformation, Filter, or Selection (Plot Attribute) subnodes as needed (note that, for a Max/Min Point plot, the At least one but not all option in the Filter subnode is not applicable). Right-click a 2D Plot Group or 3D Plot Group to add these plots from the More Plots submenu.
Go to Common Results Node Settings for links to information about these sections: Data, Expression, Title, and Inherit Style.
Advanced
Under Advanced, select the evaluation point type from the Point type list:
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 Lagrange points (the default) to evaluate the maximum or minimum value in the Lagrange points. Select a Lagrange order (default: 5; the Lagrange order is the number of partitions of an element edge) to adjust the accuracy of the minimum or maximum values.
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Node points (the default) to evaluate the maximum or minimum value in the node points of the extended mesh.
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 Integration points to evaluate the maximum or minimum value in the integration points. Select an Integration order (default: 4) to adjust the accuracy of the minimum or maximum values.
Edit these other settings if required:
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Enter a Display Precision for the number of decimals displayed in the labels. The default is 6.
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If you want to add a prefix or a suffix to the labels for the maximum and minimum values, add them in the Prefix and Suffix fields. The same prefix and suffix are used for the maximum and minimum labels.
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The Recover default is Off because recovery takes processing time. To edit the default and use polynomial-preserving recovery and recover fields with derivatives such as stresses or fluxes with a higher theoretical convergence than smoothing, from the Recover list, select Within domains to perform recovery inside domains or Everywhere to apply recovery to all domain boundaries.
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Select an option from the Display list: Min and max (the default), Min, or Max.
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Select the Include unit check box to add the unit of the expression for which the plot shows the maximum or minimum value.
Coloring and Style
From the Color list, choose the color to use for the maximum and minimum values; choose Custom to choose a custom color from a color palette.
From the Background color list, choose a background color for a rectangular area around the displayed maximum and minimum values; the default is None, which means that there is no background color.
Select the Show frame check box to display the maximum and minimum values in a rectangular frame. Select the frame background color from the Background color list.