Thermal Diffusion of a Two Layer System

Details Thermal Diffusion of a Two Layer System Thermal Diffusion of a Two Layer System

1995-04-20

arxiv.org/abs/cond-mat/9504083v1

Phys. Rev. B 51, 2188 (1995)

Physics

Condensed Matter

16 pages, 1 figure, RevTeX v. 3.0 macro package

Scientific paper

10.1103/PhysRevB.51.2188

In this paper thermal conductivity and thermal diffusivity of a two layer system is examined from the theoretical point of view. We use the one dimensional heat diffusion equation with the appropriate solution in each layer and boundary conditions at the interfaces to calculate the heat transport in this bounded system. We also consider the heat flux at the surface of the samle as boundary condition instead of using a fixed tempertaure. From this, we obtain an expression for the efective thermal diffusivity of the composite sample in terms of the thermal diffusivity of its constituent materials whithout any approximations.

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