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This paper investigates the tidal transport of angular momentum in accretion disc flow in a close binary system with small mass ratio, q. We demonstrate that the disc can only be tidally truncated if q is greater than the inverse of the Reynolds number. We derive the existence of a strong 2:1 resonance. Near the resonance, a spiral dissipation pattern is expected. If the Reynolds number is greater than ∼q−2, a dissipation and angular momentum loss from the disc may be sufficient to truncate it at the resonance. Finally we discuss the application of these results to dwarf novae.
Lin et al. (Sun,) studied this question.