Picture of person typing on laptop with programming code visible on the laptop screen

World class computing and information science research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

Explore

Capturing the Knudsen layer in continuum-fluid models of non-equilibrium gas flows

Lockerby, Duncan A. and Reese, Jason M. and Gallis, Michael A. (2005) Capturing the Knudsen layer in continuum-fluid models of non-equilibrium gas flows. AIAA Journal, 43 (6). pp. 1391-1393. ISSN 0001-1452

[img]
Preview
Text (strathprints005221)
strathprints005221.pdf - Accepted Author Manuscript

Download (189kB) | Preview

Abstract

In hypersonic aerodynamics and microflow device design, the momentum and energy fluxes to solid surfaces are often of critical importance. However, these depend on the characteristics of the Knudsen layer - the region of local non-equilibrium existing up to one or two molecular mean free paths from the wall in any gas flow near a surface. While the Knudsen layer has been investigated extensively using kinetic theory, the ability to capture it within a continuum-fluid formulation (in conjunction with slip boundary conditions) suitable for current computational fluid dynamics toolboxes would offer distinct and practical computational advantages.