Wet Granular Flows and Structures

We will examine the properties of wet granular matter where the interplay of capillary and viscous forces and inertia can be important to their observed properties. We will first review work on our understanding of the impact of cohesive partially wetting liquid on the stability and flow properties of wet granular matter and particle segregation. Then, we will examine how these properties can be exploited to self-assemble a wide variety of intricately designed slender pillar and arch structures by simply pouring a granular suspension onto a liquid absorbing surface. We will discuss its potential for rapid manufacturing techniques such as 3D printing. Then, we will examine the interaction of liquid flow with sedimented granular beds leading to onset of motion and development of heterogeneity. Implications to boreholes and other geotechnical problems will be discussed.