Title: Scaling laws and bounds for the turbulent G.O. Roberts dynamo,
Abstract: Numerical simulations of the G.O. Roberts dynamo are presented. Dynamos both
with and without a significant mean field are obtained. Exact bounds are
derived for the total energy which conform with the Kolmogorov phenomenology of
turbulence. Best fits to numerical data show the same functional dependences as
the inequalities obtained from optimum theory.