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Investigation of thermal creep flow in divergent micro/nanochannels

Credit to Download: 1 | Page Numbers 10 | Abstract Views: 137
Year: 2017
COI code: CFD17_006
Paper Language: English

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Authors Investigation of thermal creep flow in divergent micro/nanochannels

  Mohammad Sajjad Mozaffari - High Performance Computing (HPC) Laboratory, Department of Mechanical Engineering, Ferdowsi University of Mashhad, P.O. Box 91775-1111, Mashhad, Iran.
  Ehsan Roohi - Associate Proefssor, Department of Mechanical Eng., Ferdowsi University of Mashhad

Abstract:

This paper presents an investigation of flow field and the mass flow rate of rarefied gaseous flow in divergent micro/nano channels compared with the results mass flow rate of straight channels. Direct simulation Monte-Carlo (DSMC) method is used to solve rarefied flow over a wide range of Knudsen number accurately. The results show Mach number increase in straight channels and then decrease with an increase divergence angle. We observed that the mass flow rate increases with the divergence angle. The effect of channel aspect ratio (AR) is not crucial on the mass flow rate in lower Knudsen numbers. However, the mass flow rate increases with the divergence angle when Knudsen number is high. We show that enhanced thermal creep effect is the main source of the mass flow rate increase if the wall temperature gradient is increased.

Keywords:

DSMC, Divergent micro/nano channel, Mass flow rate, Thermal creep

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https://www.civilica.com/Paper-CFD17-CFD17_006.html
COI code: CFD17_006

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Mozaffari, Mohammad Sajjad & Ehsan Roohi, 2017, Investigation of thermal creep flow in divergent micro/nanochannels, 17th Conference on Fluid Dynamics, شاهرود, دانشگاه صنعتي شاهرود- انجمن فيزيك ايران, https://www.civilica.com/Paper-CFD17-CFD17_006.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Mozaffari, Mohammad Sajjad & Ehsan Roohi, 2017)
Second and more: (Mozaffari & Roohi, 2017)
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Paper No.: 25310
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