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The turbulent viscosity of convection is believed to circularize the orbitsof close binary stars. When the tidal period is shorter than the turnover timeof the largest eddies, turbulent viscosity is believed to be suppressed. Thedegree of suppression is disputed. We re-examine these beliefs via directperturbative calculations, linearizing the fluid equations on a turbulentbackground, and by numerical integration of a chaotic dynamical system subjectto periodic forcing. We find that (i) dissipation of rapid tides is severelysuppressed; and (ii) turbulent convection does not circularize binaries whilethe stars are on the main sequence. The latter conclusion seems secure (thoughweaker) even without the former.Comment: 20 pages, 2 postscript figures, uses aaspp4.sty. Submitted to Ap

Fast Tides in Slow Stars: The Efficiency of Eddy Viscosity