The present work deals with the theoretical and experimental studies of gaseous flow through tight gaskets. The paper presents an innovative approach to accurately predict and correlate leak rates of several gases through nanoporous gaskets. The new approach is based on the calculation of the gasket porosity parameters ( and ) using a model based on a first order slip flow regime. The model assumes the flow to be continuum but employs a slip boundary condition on the leak path wall. Experimental measured gas flow rates were performed on gaskets with a microscopic flow rate range and isothermal steady conditions. The flow rate is accurately measured using multigas mass spectrometers. The gasket porosity parameters used in the developed leakage rate formula were experimentally obtained for a reference gas (helium) for each stress level. In the presence of the statistical properties of a porous gasket, the leak rates for different gases can be predicted with reasonable accuracy. It was found that the approach that considers the slip flow with the first order combined to the molecular flow covers the prediction of flow rates at the microscopy level and down to very well. Tightness hardening is the result of the saturation of the gasket combined porosity parameters or the equivalent thickness of the void layer.
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e-mail: grinelot@yahoo.fr.
e-mail: hakim.bouzid@etsmtl.ca.
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April 2011
Research Papers
Correlation of Gaseous Mass Leak Rates Through Micro- and Nanoporous Gaskets
Lotfi Grine,
Lotfi Grine
Ph.D. student
Department of Mechanical Engineering,
e-mail: grinelot@yahoo.fr.
Ecole de Technologie Superieure
, 1100 Rue Notre-Dame Ouest, Montreal, QC, H3C 1K3, Canada
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Abdel-Hakim Bouzid
Abdel-Hakim Bouzid
ASME Fellow
Department of Mechanical Engineering,
e-mail: hakim.bouzid@etsmtl.ca.
Ecole de Technologie Superieure
, 1100 Rue Notre-Dame Ouest, Montreal, QC, H3C 1K3, Canada
Search for other works by this author on:
Lotfi Grine
Ph.D. student
Department of Mechanical Engineering,
Ecole de Technologie Superieure
, 1100 Rue Notre-Dame Ouest, Montreal, QC, H3C 1K3, Canadae-mail: grinelot@yahoo.fr.
Abdel-Hakim Bouzid
ASME Fellow
Department of Mechanical Engineering,
Ecole de Technologie Superieure
, 1100 Rue Notre-Dame Ouest, Montreal, QC, H3C 1K3, Canadae-mail: hakim.bouzid@etsmtl.ca.
J. Pressure Vessel Technol. Apr 2011, 133(2): 021402 (6 pages)
Published Online: February 10, 2011
Article history
Received:
October 6, 2009
Revised:
February 17, 2010
Online:
February 10, 2011
Published:
February 10, 2011
Citation
Grine, L., and Bouzid, A. (February 10, 2011). "Correlation of Gaseous Mass Leak Rates Through Micro- and Nanoporous Gaskets." ASME. J. Pressure Vessel Technol. April 2011; 133(2): 021402. https://doi.org/10.1115/1.4002742
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