Journal
AICHE JOURNAL
Volume 63, Issue 12, Pages 5482-5489Publisher
WILEY
DOI: 10.1002/aic.15991
Keywords
lift; granular material; DEM; rotating cylinder
Categories
Funding
- Science and Engineering Research Board [SB/S3/CE/013/2013]
Ask authors/readers for more resources
The discrete element method has been used to study the lift FL on a stationary disc immersed coaxially in a slowly rotating cylinder containing a granular material. In a tall granular column, FL rises with the immersion depth h, but reaches a roughly constant asymptote at large h, in agreement with previous studies. Our results indicate that the argument in some earlier studies that FL is proportional to the static stress gradient is incorrect. Instead, our results show that the lift is caused by an asymmetry in the dilation and shear rate between the regions above and below the disc. We argue that the cause of the lift is similar to that in fluids, namely that it arises as a result of the disturbance in the velocity and density fields around the body due to its motion relative to the granular bed. (C) 2017 American Institute of Chemical Engineers
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available