Modeling of transport processes in stellarators

A relatively simple model of transport processes in stellarators is constructed that is based on neoclassical theory and accounts for anomalous heat losses. The model is used to perform calculations for the L-2M, ATF, CHS, and LHD stellarators over a wide range of plasma densities and absorbed powers. The plasma energy lifetimes calculated for these devices coincide to within factors on the order of unity with those obtained from the ISS95 and LHD empirical scalings.