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Research Papers: Materials and Fabrication

Liquid Leak Predictions in Micro- and Nanoporous Gaskets

[+] Author and Article Information
Lotfi Grine

Department of Mechanical Engineering, Ecole de Technologie Superieure, 1100 rue Notre-Dame Ouest, Montreal, QC, H3C 1K3, Canadagrinelot@yahoo.fr.

Abdel-Hakim Bouzid

Department of Mechanical Engineering, Ecole de Technologie Superieure, 1100 rue Notre-Dame Ouest, Montreal, QC, H3C 1K3, Canadahakim.bouzid@etsmtl.ca

J. Pressure Vessel Technol 133(5), 051402 (Aug 24, 2011) (6 pages) doi:10.1115/1.4003467 History: Received May 17, 2010; Revised December 15, 2010; Published August 24, 2011; Online August 24, 2011

In recent years, quite few experimental and theoretical studies have been conducted to predict gas leak rate through gaskets. However, a very limited work is done on liquid leak rates through gaskets. The slip flow model is used to predict liquid flow through porous gaskets based on measurements of gas flow at different pressures. In fact, an extrapolation of the porosity parameter approach (Grine, L., and Bouzid, A., 2009, “Correlation of Gaseous Mass Leak Rates Through Micro and Nano-Porous Gaskets,” ASME Paper No. PVP2009-77205) used to correlate leak rates between different gases is used to predict liquid leak rates. In the present article, an analytical-computational methodology based on the number and pore size to predict liquid micro- and nanoflows in the slip flow regime through gaskets is presented. The formulation is based on the Navier–Stokes equations associated with slip boundary condition at the wall. The mass leak rates through a gasket considered as a porous media under various experimental conditions of fluid media, pressure, and gasket stress were conducted on a special gasket test rig. Gaseous and liquid leaks are measured and comparisons with the analytical predictions are made.

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Copyright © 2011 by American Society of Mechanical Engineers
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Figures

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Figure 2

Liquid leak measurement method

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Figure 3

Universal gasket rig

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Figure 4

(a) Gas leak measurement set-up and (b) liquid leak measurement set-up

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Figure 5

Gas leak tests for porosity parameter determination

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Figure 6

A versus the reciprocal pressure ratio: (a) Sg=4.131 MPa, (b) Sg=6.205 MPa, and (c) Sg=8.273 MPa

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Figure 7

Porosity parameters versus gasket stress

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Figure 8

Leak liquid measurements and predictions: (a) water and (b) kerosene

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Figure 9

Leak ratio of kerosene and water versus gasket stress

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