Comment on "Velocity slip coefficients based on the hard-sphere Boltzmann equation" [Phys. Fluids 24, 022001 (2012)]

TL;DR

This paper offers a critique and discussion of Gibelli's 2012 work on velocity slip coefficients derived from the hard-sphere Boltzmann equation, highlighting potential issues or alternative perspectives.

Contribution

It provides a detailed commentary on the methodology and conclusions of Gibelli's study, contributing to the ongoing debate on velocity slip modeling.

Findings

Identifies potential limitations in Gibelli's approach

Suggests alternative interpretations of velocity slip data

Highlights the need for further validation of slip models

Abstract

We provide a comment on "Velocity slip coefficients based on the hard-sphere Boltzmann equation" by Livio Gibelli published in Phys. Fluids 24, 022001 (2012).