This book contains a selection of the papers that were presented at the
EUROMECH colloquium on particle-laden flow held at the University of
Twente in 2006. The multiscale nature of this challenging field
motivated the calling of the colloquium and reflects the central
importance that the dispersion of particles in a flow has in various
geophysical and environmental problems. The spreading of aerosols and
soot in the air, the growth and dispersion of plankton blooms in seas
and oceans, or the transport of sediment in rivers, estuaries and
coastal regions are striking examples.