Challenges in Nanofluidics—Beyond Navier–Stokes at the Molecular Scale

Processes

卷:6

BillyD. Todd¹  PeterJ. Daivis² 

[1] Department of Mathematics, School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, PO Box 218, Hawthorn, Victoria 3122, Australia;

[2] School of Science and Centre for Molecular and Nanoscale Physics, RMIT University, GPO Box 2476, Melbourne, Victoria 3001, Australia;

关键词: nanofluidics;    molecular dynamics;    hydrodynamics;    slip;    spin-coupling;    non-local constitutive equations;   

DOI  :  10.3390/pr6090144

来源: DOAJ

【 摘 要 】

The fluid dynamics of macroscopic and microscopic systems is well developed and has been extensively validated. Its extraordinary success makes it tempting to apply Navier–Stokes fluid dynamics without modification to systems of ever decreasing dimensions as studies of nanofluidics become more prevalent. However, this can result in serious error. In this paper, we discuss several ways in which nanoconfined fluid flow differs from macroscopic flow. We give particular attention to several topics that have recently received attention in the literature: slip, spin angular momentum coupling, nonlocal stress response and density inhomogeneity. In principle, all of these effects can now be accurately modelled using validated theories. Although the basic principles are now fairly well understood, much work remains to be done in their application.

【 授权许可】

Unknown