This paper contains an extensive analysis of the flow in microholes based on an experimental investigation. Experiments of the gas flow past a perforated plate with microholes () were carried out. A wide range of pressure differences between the inlet and the outlet were investigated for that purpose. Two distinguishable flow regimes were obtained: the laminar flow with the slip effects and the turbulence transition regime for a very low Reynolds number. The results are in good agreement with the theory, simulations, experiments for large scale perforated plates, and compressible flows in microtubes. The relation between the mass flow rate and the Knudsen, Reynolds, and Mach numbers for the laminar and transitional regime was obtained. It is a quadratic function of the Reynolds and Knudsen numbers () based on the hole's diameter. The value of the first order tangential momentum accommodation coefficient was estimated. It shows a strong relation to the inlet Knudsen number.
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December 2013
Research-Article
Experimental Investigation of Microscale Effects in Perforated Plate Aerodynamics
Tomasz Ochrymiuk,
Tomasz Lewandowski,
Tomasz Lewandowski
e-mail: tomasz.lewandowski@imp.gda.pl
Polish Academy of Sciences,
Institute of Fluid Flow Machinery
,Polish Academy of Sciences,
Fiszera 14
,Gdansk PL80-952
, Poland
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Justyna Czerwinska
Justyna Czerwinska
1
Artorg Center,
e-mail: justyna.czerwinska@artorg.unibe.ch
University of Bern
,Murtenstrasse 50
,Bern CH 3010
, Switzerland
e-mail: justyna.czerwinska@artorg.unibe.ch
1Corresponding author.
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Ryszard Szwaba
e-mail: rssz@imp.gda.pl
Tomasz Ochrymiuk
e-mail: tomasz.ochrymiuk@imp.gda.pl
Tomasz Lewandowski
e-mail: tomasz.lewandowski@imp.gda.pl
Polish Academy of Sciences,
Institute of Fluid Flow Machinery
,Polish Academy of Sciences,
Fiszera 14
,Gdansk PL80-952
, Poland
Justyna Czerwinska
Artorg Center,
e-mail: justyna.czerwinska@artorg.unibe.ch
University of Bern
,Murtenstrasse 50
,Bern CH 3010
, Switzerland
e-mail: justyna.czerwinska@artorg.unibe.ch
1Corresponding author.
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received January 28, 2013; final manuscript received June 27, 2013; published online September 23, 2013. Assoc. Editor: Prof. Ali Beskok.
J. Fluids Eng. Dec 2013, 135(12): 121104 (10 pages)
Published Online: September 23, 2013
Article history
Received:
January 28, 2013
Revision Received:
June 27, 2013
Citation
Szwaba, R., Ochrymiuk, T., Lewandowski, T., and Czerwinska, J. (September 23, 2013). "Experimental Investigation of Microscale Effects in Perforated Plate Aerodynamics." ASME. J. Fluids Eng. December 2013; 135(12): 121104. https://doi.org/10.1115/1.4024962
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