Hello all, I previously asked this question in r/AskPhysics, but no one answered. I am investigating the possibility of making a scale model for a rotating tube furnace. Sand like particles flow through the furnace while being heated. I know how to scale if I know the dimensionless quantities that govern the behavior, but I am not too familiar with the physics of granular flow. (My field of physics is more in heat and fluid flow) I think it is unlikely the scale model can be made to be both representative of the movement and heat transfer. Therefore, the focus is on the movement. We are interested in residence time, deviation of residence time and mixing behavior. (We can use different colored granules to observe mixing qualitatively) Thank you. submitted by /u/Kvaestr [link] [comments]