Assessment of the dependence of $(\delta{S}/\delta{V})$ on the heat   influx for a well-stirred two-phase system with interfacial boiling
  For a well-stirred multiphase fluid systems the mean interface area per unit volume, $(\delta{S}/\delta{V})$, is a significant characteristic of the system state. In particular, it is important for the dynamics of systems of immiscible liquids experiencing interfacial boiling. We estimate the value of parameter $(\delta{S}/\delta{V})$ as a function of heat influx $\dot{Q}_V$ to the system. 
Denis S. Goldobin and Anastasiya V. Pimenova
cond-mat.stat-mech physics.flu-dyn