In present study, the Navier-Stokes equations and the Burnett equations with Maxwell-Smoluchowski slip conditions for some values of Knudsen number are used to resolve the viscous compressible fluid flow of air in the stepped microchannel. An explicit finite difference scheme is employed to develop a two-dimensionl numerical Burnett solver for microfluidic flows and the second order stresses and heat fluxes in the Burnett equations are implemented into the code. Velocity slip/temperature jump conditions on the wall of the channel and on the step within duct are also used. Results are compared with those obtained by using the Navier-Stokes equations with and without the slip-wall conditions using flow in a microchannel. The effects of Knudsen number on the flow and the heat transfer characteristics of the microchannel are also investigated.
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ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels
June 23–25, 2008
Darmstadt, Germany
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-4834-5
PROCEEDINGS PAPER
Simulation of Flow in Continuum-Transition Regime in Stepped-Microchannels Using Burnett Equations
Saleh Rezaei Ravesh,
Saleh Rezaei Ravesh
Shiraz University, Shiraz, Iran
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Saeid Movahed
Saeid Movahed
Shiraz University, Shiraz, Iran
Search for other works by this author on:
Reza Kamali
Shiraz University, Shiraz, Iran
Saleh Rezaei Ravesh
Shiraz University, Shiraz, Iran
Saeid Movahed
Shiraz University, Shiraz, Iran
Paper No:
ICNMM2008-62150, pp. 47-54; 8 pages
Published Online:
June 11, 2009
Citation
Kamali, R, Ravesh, SR, & Movahed, S. "Simulation of Flow in Continuum-Transition Regime in Stepped-Microchannels Using Burnett Equations." Proceedings of the ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels. Darmstadt, Germany. June 23–25, 2008. pp. 47-54. ASME. https://doi.org/10.1115/ICNMM2008-62150
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