Gravitational and Centrifugal Syneresis

Gravitational syneresis. Distribution of the foam multiplicity. In [247], Eq. (7.4.4) was solved for a vertical steady-state (dV/dt = 0) stagnant (U = 0) nonirrigated (q = 0) foam column under the condition that the foam multiplicity attains its minimum (Kmm) at the interface between the foam and the liquid (in the cross-section Z = 0). The following quadratic dependence of the foam multiplicity on the height was obtained  

Gravitational syneresis problems in a somewhat different setting were also studied in [377, 383], 

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