%SUMMATION_BENP%

(experimental) summation of a scalar value with respect to boundary node points

INTEGRATION($IntInd$) = ( %SUMMATION_BENP%, ExpressionOfIntegrand, $PostprocessTag1$, $PostprocessTag2$, ... )

The POSTPROCESS-flags $PostprocessTag1$, $PostprocessTag2$, ... define the considered boundary node points (based on associated boundary elements). The number of POSTPROCESS-flags is not limited. Summation of a given functional $ f$ (ExpressionOfIntegrand) with respect to the set of boundary node points $ NP$ identified by the POSTPROCESS-flags:

\begin{align} I_\text{SumNP} = \sum_{i \in NP} f_i\end{align}

Note: ExpressionOfIntegrand is defined and evaluated on the boundary node points and not on the MESHFREE point cloud!