  In this Letter, we fill in the blanks in the theory of drops under shear flow
by unifying analytical predictions for steady-state behavior proposed by
Flumerfelt [R. W. Flumerfelt, J. Colloid Interface Sci. 76, 330 (1980)] for
unconfined drops with interface viscosity with the one of Shapira & Haber [M.
Shapira and S. Haber, Int. J. Multiph. Flow. 16, 305 (1990)] for confined drops
without interface viscosity. Our predictions for both steady-state drop
deformation and inclination angle are broadly valid for situations involving
confined/unconfined drops, with/without interface viscosity and viscosity
ratio, thus making our model so general that it can include any of the above
conditions.
