Geometrical multiscale models have been subject of investigation by MOX researcher since many years.

Today, the focus is on multiscale problems characterized by the strong interaction between a tubular geometry and the surrounding bulk. This type of interaction characterize problems in various field ranging from the blood perfusion of biological tissues (left image) and the heat exchange in a nuclear assembly (right image).

The general idea is to model the narrow geometries as monodimensional inclusions in a three dimensional domain. The particular coupling operator we use does not require the conformity between the mono end the three dimensional meshes resulting in a general low computational cost of the associated problems.