Influence of surface properties on the dynamics of fluid flow

Enej Istenič (Author), Viktor Šajn (Author), Miha Brojan (Author)

Abstract

In this paper, we study how the fluid flow near the surface of a monocrystalline body is affected by the surface properties due to atom-surface scattering. We propose a toy model for this system by parameterizing the surface with a periodic function of the tangential position. This allows us to derive the velocity probability density function in the Knudsen layer and determine statistical averages of fluid velocity and stress tensor components in the region of interest. The results of this analysis provide a potentially more fundamental and accurate explanation for empirically observed phenomena such as the no-slip boundary condition, boundary layer formation, and the onset of hydrodynamic instability.

Keywords

kinetic theory of gases;fluid flow near a wall;fluid mechanics;

Data

Language:	English
Year of publishing:	2022
Typology:	1.01 - Original Scientific Article
Organization:	UL FS - Faculty of Mechanical Engineering
UDC:	532:533
COBISS:	97019651
ISSN:	1070-6631
Views:	1132
Downloads:	227
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	kinetična teorija plinov;tok fluida ob steni;mehanika fluidov;
Type (COBISS):	Article
Pages:	str. 1-17
Volume:	ǂVol. ǂ34
Issue:	ǂiss. ǂ2
Chronology:	2022
DOI:	10.1063/5.0078745
ID:	14511498