Cell Quality Remediation

The Cell Quality Remediation model helps you get solutions on a poor-quality mesh. This model identifies poor-quality cells, using a set of predefined criteria, such as Skewness Angle exceeding a certain threshold. Once these cells and their neighbors have been marked, the computed gradients in these cells are modified in such a way as to improve the robustness of the solution.

In general, the effect of Cell Quality Remediation is confined to the immediate vicinity of poor-quality and/or degenerate cells, so that the influence on overall solution accuracy is minimal. However, a side effect is that the mesh quality metrics used to mark the poor-quality cells are recomputed each time the mesh changes. Therefore, in certain situations such as moving meshes, using the model can have a significant computational cost.

When a boundary is part of a non-conformal interface, the interface intersection process creates new faces for the cells adjoining the boundary. These new faces cause the cell metrics to change, which in turn can affect whether or not these cells are included in any cell quality remediation remediation.