Starting from the Braginskii fluid equations, a set of nonlinear reduc
ed equations are derived which describe the low frequency dynamics of
electron and ion energy and density in a toroidal plasma. The equation
s have an energy integral. The equations are appropriate for studying
the relation between electron and ion thermal transport and particle t
ransport in low temperature plasma near the edge of plasma confinement
devices. (C) 1997 American Institute of Physics.