This spring I taught an undergraduate Geomorphology class at Duke. For the last few weeks of class, I broke out my debris flow flume. I have written about this debris flow previously, and is described here on the Sediment Experimentalist Network site. Also posted is a slo-mo video of a typical debris flow.
Students planned and executed an experiment of their choosing — an example of a ‘Course-based Undergraduate Research Experience’ (CURE). Though there has been some work done with ‘scaled down’ debris flows (e.g., de Haas et al. 2015) there seemed to be lots of room for the students to do something new.
Both groups ended up investigating various mitigation measures for slowing or stopping debris flows. This involved 3D printed several pieces as mitigation structures, from solid walls of various sizes and angles: