Water spreading anaysis on fabrics surfaces

Fichet, D.1, Lesage, F.1, Ventenat, V.2, Latifi, M.A.2
1 Laboratoire des Sciences du Génie Chimique, CNRS-ENSIC, Nancy Cedex, France
2 Centre de recherche Decathlon, Villeneuve d’Ascq, France

This paper deals with experimentation, modelling, simulation and optimisation of a Moisture Management Tester (MMT) which is used to determine the liquid spreading and transfer rates of a fabric.

A 3D model was developed and implemented within FEMLAB. It consists of partial differential equations describing the mass balance of water adsorbed on the fibres and water moving in the free volume of the fabric in isothermal conditions. The objective of the model is to simulate the MMT experimental method and predict the local and global water contents on both surfaces of the fabric.

An optimisation method was then used to determine the values of some of the model unknown parameters which minimise the least squares between the experimental measurements and model predictions of the water contents of the considered fabric.