Visualization of the effects of buoyancy on liquid-liquid displacements in vertically-aligned porous medium cells

Conclusions The results of this work suggest that the use of two-dimensional porous medium cells aligned in the vertical plane affords a promising experimental technique for studying the very significant effects that buoyancy forces are capable of exerting on the stability of liquid/liquid displacement processes in porous media. The cell described here is relatively easy to use and permits a wide range of cell orientations, flow modes, injection points, and recovery points to be investigated. Detailed quantitative studies involving a wide range of fluids, flowrates, and flow modes, are currently under way and will be reported in due course.