Reference number : GC-2017-Q2-04264, amendment number : , agreement type : G, recipient legal name : Elfring, Gwynn (The University of British Columbia), recipient country : CA, recipient province : nan, recipient city : British Columbia|Colombie-Britannique, recipient postal code : nan, program name english : Engage Grants for Universities, program name french : Subventions d'engagement partenarial pour les universités, program purpose english : Absorption of liquid into paper towel is a complex process: it involves a surface tension driven flow in a_x000D_
porous and elastic network that swells and deforms when in contact with liquid. Analysis of surface tension_x000D_
driven flow in a capillary dates back a century to the work of Lucas and Washburn on capillary rise. While_x000D_
early work on capillary driven flow focused primarily on the regime where capillary forces balance viscous_x000D_
forces, if the walls of the pore (or of the porous media) are flexible then elastic forces arise due to the_x000D_
deformation of the pore. The dynamics of elasto-capillary rise have only recently been explored, and it has been_x000D_
shown that for sufficiently flexible channels the fluid penetration is retarded compared to rigid channels. In_x000D_
paper towel, plies are not only elastic, but also porous and so we propose here to extend recent work on_x000D_
elasto-capillary flow to include porous walls. We aim to determine the relative importance of surface tension,_x000D_
elasticity and porosity over length and time scales which are relevant to paper towel and tissue absorption in an_x000D_
effort to improve the performance of these products., program purpose french : Absorption of liquid into paper towel is a complex process: it involves a surface tension driven flow in a_x000D_
porous and elastic network that swells and deforms when in contact with liquid. Analysis of surface tension_x000D_
driven flow in a capillary dates back a century to the work of Lucas and Washburn on capillary rise. While_x000D_
early work on capillary driven flow focused primarily on the regime where capillary forces balance viscous_x000D_
forces, if the walls of the pore (or of the porous media) are flexible then elastic forces arise due to the_x000D_
deformation of the pore. The dynamics of elasto-capillary rise have only recently been explored, and it has been_x000D_
shown that for sufficiently flexible channels the fluid penetration is retarded compared to rigid channels. In_x000D_
paper towel, plies are not only elastic, but also porous and so we propose here to extend recent work on_x000D_
elasto-capillary flow to include porous walls. We aim to determine the relative importance of surface tension,_x000D_
elasticity and porosity over length and time scales which are relevant to paper towel and tissue absorption in an_x000D_
effort to improve the performance of these products., agreement title english : The mechanics of poro-elastic capillary flow, agreement title french : The mechanics of poro-elastic capillary flow, agreement number : EGP, agreement value : 25000.0, agreement start date : 2017-09-20, agreement end date : nan, description english : nan, description french : nan, expected results english : nan, expected results french : nan, additional information english : Grant or Award spanning more than one fiscal year (2017-2018 to 2018-2019)., additional information french : Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019)., owner organization : nserc-crsng, owner organization title : Natural Sciences and Engineering Research Council of Canada | Conseil de recherches en sciences naturelles et en génie du Canada