Micro- and nano-scale fluid systems can behave very differently from their macro-scale counterparts. Remarkably, there is no sufficiently accurate, computationally efficient, and — most importantly — generally agreed fluid dynamic model that encapsulates all of this important behaviour. The only thing that researchers can agree on is that the conventional Navier-Stokes fluid equations are unable to capture the unique complexity of these often locally non-thermodynamic-equilibrium flows. Here, we outline recent work on developing and exploring new models for these flows, highlighting, in particular, slip flow as a quintessential non-equilibrium (or sub-continuum) phenomenon. We describe the successes and failures of various hydrodynamic and molecular models in capturing the non-equilibrium flow physics in current test applications in micro and nano engineering, including the aerodynamic drag of a sphere in a rarefied gas, and the flow of water along carbon nanotubes.
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ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels
June 19–22, 2011
Edmonton, Alberta, Canada
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4464-9
PROCEEDINGS PAPER
Perspectives on the Simulation of Micro Gas and Nano Liquid Flows
Jason M. Reese,
Jason M. Reese
University of Strathclyde, Glasgow, UK
Search for other works by this author on:
William D. Nicholls
William D. Nicholls
University of Strathclyde, Glasgow, UK
Search for other works by this author on:
Jason M. Reese
University of Strathclyde, Glasgow, UK
William D. Nicholls
University of Strathclyde, Glasgow, UK
Paper No:
ICNMM2011-58296, pp. 639-648; 10 pages
Published Online:
May 11, 2012
Citation
Reese, JM, & Nicholls, WD. "Perspectives on the Simulation of Micro Gas and Nano Liquid Flows." Proceedings of the ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, Volume 2. Edmonton, Alberta, Canada. June 19–22, 2011. pp. 639-648. ASME. https://doi.org/10.1115/ICNMM2011-58296
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