Interfacial instability units

For instability appearance analysis it is essential not only to develop the main equations of transfer but to formulate boundary conditions, because dissipative structures appear more frequently near phase boundaries and may be caused by fluctuations of boundary conditions. It is of great practical interest to investigate the role of capillary [5] and electrosurface [6] forces in inducing the instability of mobile phase boundaries. That is the reason for determining boundary conditions for the transfer equation system characterizing the interface of two mobile media (liquid-gas or liquid-liquid). Let be the radius-vector drawn from any fixed space point to another on the phase boundary and n a unit vector normal to the interface and directed towards the interior of phase 1 (the second phase would be written as phase 2). The tangential unit vector at the interfacial surface would be t. Then conjugation conditions for velocities, temperatures, concentrations and electric fields at the interface would be ... 

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