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Effect of surfactant on the long-wave instability of a shear-imposed liquid flow down an inclined plane
2005
Physics of Fluids
Preserved Fulltext
The effect of an insoluble surfactant on the linear stability of a shear-imposed flow down an inclined plane is examined in the long-wavelength limit. It has been known that a free falling film flow with surfactant is stable to long-wavelength disturbances at sufficiently small Reynolds numbers. Imposing an additional interfacial shear, however, could cause instability due to the shear-induced Marangoni effect. Two modes of the stability are identified and the corresponding growth rates are
doi:10.1063/1.1823171
fatcat:ujxbokfsqzb45kkybxk3kubrhi