Ansys Meshing – Local Sizing

Global sizing sets the resolution of the whole model, but a simulation rarely needs the same resolution everywhere. Local sizing is how you spend cells only where the gradients are.

The control is applied to a specific entity, and the entity you pick defines what it does: a body sizing sets the cell size throughout a volume, a face sizing controls the elements on a surface and therefore the first layer of the volume mesh next to it, and an edge sizing fixes the divisions along a curve, which is how you resolve thin features and sharp corners.

Two habits keep the mesh healthy: keep the ratio between neighbouring sizes gentle, since abrupt jumps produce skewed cells, and check the resulting cell count before generating, because several overlapping local controls add up faster than expected.