Predictions for TFTR current scaling experiments are investigated for
four recent theoretically based models, to find support for empirical
current scaling used for planning future fusion devices. The profile-c
onsistent drift wave model is found to predict current scaling. None o
f three multimode models, including the Bateman Version 5. 10 model, p
reviously claimed to show current scaling for TFTR, succeeds in simula
ting measured temperature and density profiles for either high or low
current experiments. Standard edge resistive ballooning mode models do
not lead to I(p) scaling of confinement, underestimating losses at lo
w current by factors of 2 to 4.