  We review understanding of kinetics of fluid phase separation in various
space dimensions. Morphological differences, percolating or disconnected, based
on overall composition in a binary liquid or density in a vapor-liquid system,
have been pointed out. Depending upon the morphology, various possible
mechanisms and corresponding theoretical predictions for domain growth are
discussed. On computational front, useful models and simulation methodologies
have been presented. Theoretically predicted growth laws have been tested via
molecular dynamics simulations of vapor-liquid transitions. In case of
disconnected structure, the mechanism has been confirmed directly. This is a
brief review on the topic for a special issue on coarsening dynamics, expected
to appear in Comptes Rendus Physique.
