Inhomogeneous cosmological models with heat flux.

The authors present a general class of inhomogeneous cosmological models filled with nonthermalized perfect fluid by assuming that the background spacetime admits two space-like commuting Killing vectors and has separable metric coefficients. The singularity structure of these models depends on the choice of the parameters and the metric functions. A number of previously known perfect fluid models follow as particular cases of this general class. Physical and geometrical features of these models are studied and the general expression for the temperature distribution is given.