Microscale fluid dynamics has received intensive interest due to the emergence of microelectromechanical systems (MEMS) technology. Fluid flow in microdevices has some characteristics which one of them is rarefaction effect related with gas flow. In this work, the steady state laminar rarefied gas flow in the entrance region of parallel plate microchannels is investigated by the integral method with slip flow conditions at solid surface. The effects of Knudsen number on friction factor and Nusselt number are presented in graphical form as well as analytical form. Also the effect of Knudsen number on hydrodynamic entry length is presented. The results show that as Knudsen number increases the local friction factor and Nusselt number decrease. Also an increment of Knudsen number leads to a larger amount of hydrodynamic entry length.
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ASME 2009 7th International Conference on Nanochannels, Microchannels, and Minichannels
June 22–24, 2009
Pohang, South Korea
Conference Sponsors:
- Nanotechnology Institute
ISBN:
978-0-7918-4349-9
PROCEEDINGS PAPER
Analysis of Laminar Flow in the Entrance Region of Parallel Plate Microchannels for Slip Flow
Arman Sadeghi,
Arman Sadeghi
Sharif University of Technology, Tehran, Iran
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Abolhassan Asgarshamsi,
Abolhassan Asgarshamsi
Sharif University of Technology, Tehran, Iran
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Mohammad Hassan Saidi
Mohammad Hassan Saidi
Sharif University of Technology, Tehran, Iran
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Arman Sadeghi
Sharif University of Technology, Tehran, Iran
Abolhassan Asgarshamsi
Sharif University of Technology, Tehran, Iran
Mohammad Hassan Saidi
Sharif University of Technology, Tehran, Iran
Paper No:
ICNMM2009-82012, pp. 345-352; 8 pages
Published Online:
September 21, 2010
Citation
Sadeghi, A, Asgarshamsi, A, & Saidi, MH. "Analysis of Laminar Flow in the Entrance Region of Parallel Plate Microchannels for Slip Flow." Proceedings of the ASME 2009 7th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2009 7th International Conference on Nanochannels, Microchannels and Minichannels. Pohang, South Korea. June 22–24, 2009. pp. 345-352. ASME. https://doi.org/10.1115/ICNMM2009-82012
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