3 ms·

I remember seeing a video demoing how to make sand flow like water by bubbling air into it: https://youtube.com/watch?v=My4RA5I0FKs https://youtube.com/watch?v=

• crossman 8y ago
  That was my first thought too.
• chimere 8y ago
  (Charm co-founder here) I love that video! That fluidization phenomenon is commonly used in large-scale gasification or combustion processes, see: https://en.wikipedia.org/wiki/Fluidized_bed_reactor https://en.wikipedia.org/wiki/Fluidized_bed_reactor
  • mojomark 8y ago
    You probably know, but don't forget that compressing air is energy intensive. I'm not saying that the extra expense can't be marginalized - especially if you can dramatically increase production, I'm just pointing out that it's far from free. Just another fun engineering problem to tackle:)