Fig. 2.

Active and passive systems interconnections. The thermoregulatory system modulates shivering (Q _shiv), vasomotion (${\dot{m}}_{\mathrm{skin},\mathrm{dil}}$, ${\dot{m}}_{\mathrm{skin},\mathrm{con}}$) and sweating (q _eva) according to T _core and T _skin variations. These latter quantities are evaluated globally from tissue temperature (T _t) field. The blood system is not directly affetcted by the thermoregulatory system but it is coupled with tissue system by means of the wall temperature (T _w) and the inlet circuit temperature (T _in), both derived from (T _t) field. The blood temperature (T) computed in the fluid system serves as input in the solid model