The Transport Coefficients

In this section we wish to give a detailed account of all the transport coefficients related to the vectorial fluxes discussed in the previous chapters. These are the mass flux $\vec{J}_{a}$ ($=-\vec{J}_{b}$ ), the corresponding charge flux or electrical current $\vec{J}_{c}$ , closely related to $\vec{J}_{a}$ , and $\vec{J}^{\prime}_{q}$ the heat flux. In every case the magnetic field is chosen as the direction of the z-axis, $\vec{B}=B\hat{k}$ so that for any vector, its different components respect to $\vec{B}$ will follow from the decomposition illustrated in Fig. (4.1).