Jump in the conduction heat flux at the gas/solid interface in micro-channels

Dahia Chibouti (1) , Benoît Trouette (1) , Eric Chénier (1)

1 MSME - Laboratoire Modélisation et Simulation Multi-Echelle

In mi­cro-chan­nel gas flows, ve­loc­ity slip and tem­per­a­ture jump must be ap­plied at the fluid/​solid in­ter­face to take the ther­mo­dy­namic non-equi­lib­rium into ac­count in the vicin­ity of the wall. In this work, sim­u­la­tions at mol­e­c­u­lar scale have been car­ried out and shown a jump in the con­duc­tion heat flux, in agree­ment with the bound­ary con­di­tion pro­posed by Maslen (1958) in con­tin­uum me­chan­ics.

Domaines: Mécanique des fluides [physics.class-ph]; Thermique [physics.class-ph]

Dahia Chibouti, Benoît Trouette, Eric Chénier. Jump in the conduction heat flux at the gas/solid interface in micro-channels. International Journal of Thermal Sciences, 2021, 159. ⟨hal-02930894⟩