Скачать или смотреть Mixing in a gas fluidized bed

This is a video of a gas fluidized bed of particles. The tank is filled with particles of two sizes. The white powder is fine grained (45-90 microns), and the red powder is relatively coare grained (~200 microns). In this experiment, compressed air is delivered to the base of the tank/bed via a porous plate (that stops the powder escaping downward). During the experiment I increase the gas flow rate (you can hear me reading out the flow rates in litres per minute). At the end of the experiment, the bed becomes fully mixed simply as a result of the fluidization process.


If you are interested in learning more, I described this work in a paper at Journal of Volcanology and Geothermal Research.


https://www.sciencedirect.com/science...