- Circulating fluidized beds (CFBs) span a wide range of operating ranges throughout
- their subsystems. The riser section is typically characterized by dilute transport.
- Here, a 1.8 m section (~9M particles) of a pilot-scale CFB riser at
-
PSRI is modeled, just 1/10th of the physical
- system's length. As high speed (15 m/s) gas flow drives the verically, denser than
- average (1%) regions can form at (or migrate to) the wall and actually fall against
- the mean flow. This phenomena can be observed on the right in the video while a
- streamer climbes slowly on the left. We note that the domain is too small as the
- streamer has interacted with its periodic image. Future work will simulate the full
- 18 m lenght of the riser.
- Simulated by MFiX-Exa develop (git hash ef171c9d) using 24 GPUs on NETL's Joule2 HPC.
+ Circulating fluidized beds (CFBs) span a wide range of operating conditions
+ throughout their subsystems. The riser section is typically characterized by
+ dilute transport. Here, a 1.8 m section (~9M particles) of a pilot-scale CFB
+ riser at
PSRI is modeled, just 1/10th of the
+ physical system's length. As high speed (15 m/s) gas flow drives the
+ 650 micron HDPE particles vertically, denser than average (1%) regions can
+ form at (or migrate to) the wall and fall against the mean flow.
+ This phenomena can be observed on the right in the video while a streamer
+ climbs slowly on the left. We note that the domain is too short, as the streamer
+ has interacted with its periodic image. Future work will simulate the full 18 m
+ length of the riser.
+ Simulation by MFiX-Exa develop (git hash ef171c9d) using 24 GPUs on NETL's Joule2 HPC.
The animation rendered with
Blender.