Convection sous-vestimentaire. Analyse dimensionnelle et mesure des flux échangés

This article presents an experimental study that quantifies heat and mass transfers between the skin and a fabric layer. The experiment is carried out with a sponge plate heated to skin temperature, about 35°C, and saturated in moisture. Analysis by holographic interferometry provides the determination of the convective heat fluxes. Radiative flows are calculated by the radiosity method. We show the influence of the underclothing air layer, and that of the fabric using different textiles. The radiative properties also modify the underwear exchanges. The influence of mass transfer on convective phenomena was studied by comparison with a dry plate. The results that are obtained, under the form of heat fluxes, are analysed. They can be used to create a data base to check the validation of models treating heat exchanges between skin and clothes.