Experimental results are presented describing the buckling type of instability of thin layers of very viscous liquids subjected to linear shear flow. If the dimensionless shear stress in the layer exceeds a critical value, the layer will buckle in a manner similar to the buckling of a thin elastic plate. The stability criteria are obtained as a ratio of the destabilizing viscous stresses relative to the stabilizing surface tension and gravitational forces.
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Suleiman et al. (1981) studied this question.
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