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Thermal of the skin

MSC : G. Guiffant, P. Flaud, Ph. Dantan

Collaboration : V. Berger.

Keywords: microcirculation, macrocirculation, infrared camera, flow, numerical simulation, heat transfer

The use of a highly performance infrared camera permitted to show that it is possible to measure cutaneous temperature field representative of both the cutaneous microcirculation and subcutaneous macrociorculation. The temperature field resulting from a heat flux located on a particular area of the skin is significantly modified both by the microcirculation and subcutaneous vessels. Two approaches can be used for the description of the vascular cutaneous circulation. In a first approach the superficial layer is seen as a thermally orthotropic medium and in a second approach the superficial capillary circulation is seen as a succession of flows of recirculation. In both cases, the under layer vascular flow is taken as a Poiseuille flow in a cylindrical duct of radius R. The numerical simulations in the frame work of this hypothesis are in qualitative accordance with the in vivo observations.

- P. Flaud, Ph Dantan, J.Giraud, G. Guiffant, V. Berger, "Transport de Chaleur et circulation sanguine", 3rd International Meeting of the French Society of Hypertension, et 3ième Journée Thématique de la Société de Biomécanique 17 et 18 décembre 2009 Paris.

Nom des membres actuels ou anciens

DANTAN Philippe, FLAUD Patrice, GUIFFANT Gérard

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