Example 1: test mesh edges and boundary faces for negative coupling coefficients.

The objective is to use the **negative_aij / rivara** command that
first identifies elements that have negative coupling coefficents, and
then proceeds with a rivara boundary refinement to reduce or eliminate
the negative couplings.

The output consists of one gmv file.

Input

Images of GMV input and output

The details of the coupling coefficient statistics can be found in the output log file.

Input geometry

(view A)

Output geometry

(view B)