Centrifuge modeling of one-step outflow tests for unsaturated parameter estimations H. Nakajima ∗ and A. T. Stadler ∗∗ Geoscience Research, Idaho National Laboratory, Idaho Falls, Idaho, USA ∗ now at: Center for Deep Geological Environments, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan ∗∗ now at: URS Corporation, Cleveland, Ohio, USA Received:...

We propose a theory for axial segregation of suspensions of non-neutrally buoyant particles in a rotating cylinder. The cylinder is oriented in the horizontal plane, so that any axial forces must arise from interparticle interactions. We show that the hydrodynamic interaction between pairs of particles produces a relative motion in the axial direction, independent of the gravitational force. If...

Abstract Rainfall-induced slope instabilities are ubiquitous in nature, but simulation of this type hazards with centrifuge modelling still poses difficulties. In paper, we introduce a rainfall device for initiating failure medium-sized centrifuge. This system is simple, robust and affordable. An array perforated hoses placed close above the model surface to generate raindrops. The intensity de...