A simple low pressure drop suspension-based microfluidic mixer

Mixing stuff in very viscous fluids, or better said: at low Reynolds number, is not easy. Here is a microfluidics tool that allows one to do so anyway. It uses a simple small magnet aka stirring bar in a small chamber. M.J. Workamp, V. Saggiomo, J.A. Dijksman — Journal of Micromechanics and Microengineering 25 (2015)Continue reading “A simple low pressure drop suspension-based microfluidic mixer”

Multiple-contact discrete-element model for simulating dense granular media

Deformable spheres in a packing under compression can develop additional physics when new contacts are created due to their deformability and volume conservation. Here we introduce a DEM code that can calculate these consequences. N. Brodu, J.A. Dijksman, R.P. Behringer — Physical Review. E, Statistical nonlinear, and soft matter physics 91 (2015) 10.1103/PhysRevE.91.032201