Gl. Caraffini et al., A MULTIGROUP APPROACH TO THE NONLINEAR EXTENDED BOLTZMANN-EQUATION, Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics, 17(2), 1995, pp. 129-142
Following a procedure which is typical of linear (neutron) transport t
heory, a multigroup approach is proposed for the non-linear extended B
oltzmann equation in the presence of removal, a background medium, an
external source and an external force field. The relevant multigroup e
quations, corresponding to a discretization of the speed variable only
, are derived and discussed, especially in connection with the so-call
ed semi-discrete models recently introduced in kinetic theory.