Contact model

By using a unified continuum approach to model fluid-structure interaction, we can model contact by changing fluid elements  into solid elements in a contact region. This is described in the following paper: 

Hoffman, Johan et al. "An interface-tracking unified continuum model for fluid-structure interaction with topology changed full-friction contact with application to aortic valves", International Journal for Numerical Methods in Engineering (2020). Links to an external site. Links to an external site.