Fluid velocity slip and temperature jump at a solid surface

TL;DR

This paper reviews the current state of analytical, experimental, and numerical models concerning fluid velocity slip and temperature jump at solid surfaces, highlighting ongoing challenges and influencing factors.

Contribution

It provides a comprehensive overview of existing models, experimental techniques, and factors affecting fluid-solid boundary conditions, emphasizing unresolved mechanisms.

Findings

Summary of theoretical and experimental models

Identification of key influencing factors

Highlighting unresolved mechanisms

Abstract

A comprehensive review of current analytical models, experimental techniques, and influencing factors is carried out to highlight the current challenges in this area. The study of fluid-solid boundary conditions has been ongoing for more than a century, starting from gas-solid interfaces and progressing to that of the more complex liquid-solid case. Breakthroughs have been made on the theoretical and experimental fronts but the mechanism behind the phenomena remains a puzzle. This paper provides a review of the theoretical models, and numerical and experimental investigations that have been carried out till date. Probable mechanisms and factors that affect the interfacial discontinuity are also documented.