Numerical simulation of dynamic contact-line problems

Numerical simulation of dynamic contact-line problems

The presence of a three-phase region, where three immiscible phases are in mutual contact, causes additional difficulties in the investigation of many fluid mechanical problems. To surmount these difficulties some assumptions or specific hydrodynamic models have been used in the contact region (inner region). In the present paper an approach to the numerical solution of dynamic contact-line pro...

Numerical simulation of moving contact line problems using a volume-of- uid method

Moving contact lines are implemented in a volume-ofuid scheme with piecewise linear interface construction. Interfacial tension is treated as a continuous body force, computed from numerical derivatives of a smoothed volume-ofuid function. Two methods for implementing the contact angle condition are investigated. The rst extrapolates the volume-ofuid function beyond the ow domain, on the basis ...

Numerical Methods for Dynamic Contact and Fracture Problems

The present work deals with the numerical solution of dynamic contact and fracture problems. The contact problem is a Signorini problem with or without Coulomb friction. The fracture problem uses a cohesive zone model with a prescribed crack path. These problems are characterized by a non-regular boundary condition and can be formulated with evolutionary variational inequations or di erential i...

An easy-to-implement numerical simulation method for adhesive contact problems involving asymmetric adhesive contact

A novel numerical method to solve asymmetric adhesive contact problems in rectangular coordinates has been developed. Surface interaction is modelled using an interface potential, deformation is coupled using Green’s functions for a half space, and the resulting system of equations is solved by a relaxation technique. The method can handle arbitrary surface topography and properties. Compared w...

Numerical modelling of the dynamic contact angle