Orthogonal Quality In ANSYS® Meshing(Illustrated Expression)

As we said in all articles about mesh metrics in ANSYS®, mesh metrics are generally used to assess the mesh structure situations on various bases. One of these mesh metrics to assess the mesh structure situation is ‘Orthogonal Quality’. In this article we will explain;

• What is ‘Orthogonal Quality’ in ANSYS® Meshing metrics?
• How the ‘Orthogonal Quality’ can be seen in ANSYS®?

What Is ‘Orthogonal Quality’ Mesh Metric In ANSYS®?

To adjust the mesh metric to ‘Orthogonal Quality’, click on the ‘Mesh’ tab as in the red box and select the ‘Orthogonal Quality’ from the pop-up menu as shown by the green box in ANSYS® Meshing.

After selecting the ‘Orthogonal Quality’ for mesh metric in ANSYS®, you can see the minimum, maximum, average, and standard deviation values of the mesh structure that is created. Also, there is a graph that shows the dispersion of various orthogonal quality mesh metrics according to the number of elements.

Orthogonal quality is computed with vector mechanics. Calculations are done by using the face normal vector, the vector from the cell centroid to the centroid of each of the adjacent cells, and the vector from the cell centroid to each of the faces. It sounds complex but what you need to know about ‘Orthogonal Quality’ is, 0 is worst and 1 is the best.

Conclusion

Orthogonal quality is also generally used to assess the mesh shape quality as skewness of mesh structures. Orthogonal quality can be described as above in very basic terms.

Leave your comments and questions about the ‘Orthogonal Quality’ mesh metric in ANSYS® Meshing.

NOTE: All the screenshots and images are used in education and informative purposes. Images used courtesy of ANSYS, Inc.