Media Deborah number

The pendant of equation (1.5.11 has been experimentally verified by O Konski and Gunther ) for the case of hanging drops. Moriya et al. ) studied the time dependence of the deformation in very viscous fluids. This relaxation can be well represented by multiplying the r.h.s. with a factor (1 - exp(-t/r)l where t is the time and T a characteristic relaxation time, proportional to the sum of the viscosities of droplet and medium. It is recalled that t/r is just the reciprocal Deborah number De" . 

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