  Remaining within the pure hydrodynamic approach, we formulate a
self-consistent model for simulating the dynamic behavior of matter passing
through metastable states in the two-phase liquid-vapor region of the phase
diagram. The model is based on the local criterion of explosive boiling,
derived by applying the theory of homogeneous bubble nucleation in superheated
liquids. Practical application of the proposed model is illustrated with
hydrodynamic simulations of a volumetrically uniformly heated planar layer of
fused silica SiO2. Implications for experimentally measurable quantities are
briefly discussed. A newly developed equation of state, based on the well known
QEOS model and capable of handling homogeneous mixtures of elements, was used
in the numerical simulations.
