The International Journal of Multiphase Flow publishes theoretical and experimental investigations of multiphase flow which are of relevance and permanent interest.Topics appropriate to the journal include fluid mechanics and rheological studies of problems involving: • multiphase flow and heat transfer • cavitation phenomena • slurries (such as ceramics, catalysts, filled polymers, etc.) • suspensions • particle-flow interactions • bubble and drop dynamics • fluidization • porous media The journal includes full papers, brief communications covering reports, current investigations and discussions of previous publications, and conference announcements.