Comment on "Dynamic Wetting by liquids of different viscosity", by T.D. Blake and Y.D. Shikhmurzaev

TL;DR

This paper critically analyzes a recent dynamic wetting theory based on interface formation, arguing that its treatment of surface tension and relaxation is physically flawed, thus questioning its validity.

Contribution

It provides a critical commentary highlighting flaws in the original model's physical assumptions regarding surface tension in dynamic wetting.

Findings

Identifies flaws in the treatment of surface tension

Questions the physical validity of the original model

Highlights the need for revised theoretical approaches

Abstract

We comment on a recent theory of dynamic wetting, that is based directly upon a model for interface formation, introduced by Shikhmurzaev. We argue that the treatment of surface tension and its relaxation, inherent in the original model, is physically flawed.