André Fortin

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The simulation of highly viscoelastic fluid flow problems is still plagued with the so-called high Weis-senberg problem (HWP). The Weissenberg number W e is the ratio of the magnitude of the elastic forces to that of the viscous forces. Most (if not all) numerical methods lose convergence i.e. fail to generate any result and/or fail to generate convergent(More)
Protection of the national infrastructure is a high priority for cybersecurity of the homeland. Critical infrastructure such as the national power grid, commercial financial networks, and communications networks have been successfully invaded and re-invaded from foreign and domestic attackers. The ability to re-establish authentication and confidentiality(More)
This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may(More)
a In North America, flooring strips are manufactured with grooves at the back. There are various reasons for these grooves but, historically, they were considered a strategy to reduce weight and transportation costs as well as improving dimensional stability. As no data are available to assess best practices in terms of performance, we have investigated(More)
Engineered wood flooring (EWF) is a multilayer composite flooring product. The cross layered structure is designed to give good dimensional stability to the EWF under changing environmental conditions. However, during winter season in North America, the indoor relative humidity could decrease dramatically and generate an important cupping deformation. The(More)
An enhanced mixed formulation, based on the general form of the enthalpy, is proposed for phase change problem with convection. This formulation presents the advantage to consider both equal and different liquid-solid physical properties. A fully implicit second order accurate temporal and spatial finite element discretizations is also employed. The(More)
EXECUTIVE SUMMARY This report summarises air quality monitoring data in New Brunswick for 2009. The report is intended to provide a convenient summary of air quality results for general public information, with emphasis on air quality assessment in relation to existing air quality standards and objectives. Long-term trend data are also presented for(More)
This work investigates the pros and cons of using the Electrical Capacitance Tomography (ECT) for imaging and quantitative characterization of flow dynamics in a four-phase trickle-bed reactor. ECT use is increasing in non-invasive imaging thanks to its low cost and convenience compared to nuclear ionizing, non-ionizing and other tomography methods. Yet,(More)
2 Abstract This paper deals with linear and non-linear hydrodynamic stability of the two-dimensional Poiseuille ow. A new numerical approach for the study of linear stability is presented. A numerical study of the transition of the ow to chaos is also presented. Using tools from dy-namical system theory, we identify and characterize the diierent solutions(More)
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