ePubs
The open archive for STFC research publications
Home
About ePubs
Content Policies
News
Help
Privacy/Cookies
Contact ePubs
Full Record Details
Persistent URL
http://purl.org/net/epubs/work/34694
Record Status
Checked
Record Id
34694
Title
Simulation of low Knudsen number isothermal flow past a confined spherical particle in a micro-pipe
Contributors
RW Barber (CCLRC Daresbury Lab.)
,
XJ Gu (CCLRC Daresbury Lab.)
,
DR Emerson (CCLRC Daresbury Lab.)
Abstract
Low Knudsen number isothermal slip flow past a confined spherical particle has been investigated using a specially adapted Navier-Stokes solver. Knudsen numbers covering the continuum and slip-flow regimes (Kn ? 10?1 ) are considered while the Reynolds number is varied between 10?3 ? Re ? 0.5. In addition, blockage effects are studied by varying the ratio between the diameter of the pipe (H) and the diameter of the particle (D). A particularly important aspect of the present study is the proper formulation of the slip-velocity boundary condition over the curved surface of the particle. This is achieved by recasting Maxwell’s conventional velocity-slip equation as a function of the wall shear stress in order to account correctly for the curvature. The results show that blockage effects are extremely important in the continuum regime and cause amplification in the hydrodynamic drag on the particle. However, blockage phenomena are shown to be less important as the Knudsen number is increased. At the upper limit of the slip-flow regime, Kn ? 10?1 , blockage amplification effects are reduced by almost 50% for a pipesphere geometry of H/D = 2.
Organisation
CCLRC
,
CSE
,
CSE-CEG
Keywords
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Paper In Conference Proceedings
In ASME 2004 2nd International Conference on Microchannels and Minichannels (ICMM2004), Rochester, New York, USA, 17-19 June, 2004, (2004): 281-288.
doi:10.1115/ICMM2004-2346
2004
Showing record 1 of 1
Recent Additions
Browse Organisations
Browse Journals/Series
Login to add & manage publications and access information for OA publishing
Username:
Password:
Useful Links
Chadwick & RAL Libraries
SHERPA FACT
SHERPA RoMEO
SHERPA JULIET
Journal Checker Tool
Google Scholar