Abstract
The scale selection properties of some low-order models of Rayleigh-Bénard convection are compared with the results of some high-order models. The results of the high-order models are inconsistent with those of two previously proposed low-order models in some selected experiments. A new low-order model is offered that is consistent with the high-order models. DOI: 10.1111/j.1600-0870.1989.tb00383.x