Volume Integration, Surface Integration, and Line Integration

The derived integration values are useful for calculating integrated quantities for each solution in a data set (a time-dependent solution, for example). Also apply an average, maximum, or other operation to compute the average of an integrated quantity, for example. Under ,right-click (

) and from the submenu select:

•

(

) to evaluate an integral over a set of domains in 3D models. The result of the evaluation is stored in a and displayed in the window.

•

(

) to evaluate an integral over a set of domains in 2D, 2D axisymmetric, or boundaries in 3D.

•

(

) to evaluate an integral over a set of domains in 1D, boundaries in 2D, or edges in 3D. Integrate over any data set of the right dimension. For example, make a volume integration of a 2D revolved data set or a surface integration of a cut plane.


	Go to Common Results Node Settings for information about these sections: Data, Selection, Expressions, Integration Settings, and Data Series Operation.

For volume integration examples, and if you have the:

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AC/DC Module, for both a volume and surface integration example, see Eddy Currents: Application Library path .

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RF Module, see Microwave Oven: Application Library path .


	For a surface integration example see Effective Diffusivity in Porous Materials: Application Library path COMSOL_Multiphysics/Diffusion/effective_diffusivity.

For line integration examples, and if you have the:

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AC/DC Module, see An RFID System: Application Library path .

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CFD Module, see Capillary Filling – Level Set Method: Application Library path .

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Microfluidics Module, see Capillary Filling – Level Set Method: Application Library path .

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Heat Transfer Module, see Radiation in a Cavity: Application Library path .