We investigate the dynamics of first-order phase transitions of liquid-vapor systems via spinodal decomposition. The simulation method is based on the common Smoothed Particle Hydrodynamics (SPH) [d4] in its modern formulation with several extensions comprising thermal conduction [d3], the van der Waals equation of state [d2] and a newly developed scaling thermostat. Spinodal decompostion occurs after a sudden quench to the completely unstable spinodal region. The system instantaneously initiates to separate, where the so-called "homphase fluctuations" of the density arise [d1]. We further study the late stage growth behavior of the separated phases, that can be expressed in terms of a scaling law. There, we are mainly interested in the late stage of domain growth, where the role of inertial hydrodynamics is dominating.
The videos in the gallery illustrate some effects of the thermostat.
The videos are also available in higher quality as .avi:
b) Old publications
c) Completed work
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