Thermal diffusion Terms Links

The reason for introducing this alternative formulation is to establish a link to the transport of mass (Item 1 of Table 1.1). Here the driving potential is expressed in terms of the molar concentration gradient dC/dx, and the proportionality constant D is known as the (mass) diffusivity of the species, paralleling the thermal diffusivity a in Equation 1.3. Spontaneous transport... 

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