Convective patterns in laterally extended rotating cells with a vertically broken symmetry are analyzed. A simplified model allows one to determine the stability of different basic patterns. By means of a generalized Swift-Hohenberg equation one can study the pattern evolution for different rotation rates and different values of the symmetry-breaking term. In particular, a hexagonal pattern with oscillating amplitudes is analyzed and the role of the defects is discussed.
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Rodríguez et al. (1992) studied this question.
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