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PreprintCC BY 4.0arXiv

Helical pipes homogenize particle transport in pneumatic conveying

  • Wing To Ku
  • Patric Mueller
  • Thorsten Poeschel
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Abstract

Pneumatic conveying at moderate gas velocities can result in strongly heterogeneous particle transport, with slow particles accumulating near the bottom of the pipe while faster particles are transported above. Here, we investigate helical pipes as a passive means of homogenizing particle transport without increasing the gas velocity. CFD-DEM simulations show that the helical pipe induces swirling motion of the gas and particles, continuously redistributing particles across the pipe cross-section. This transforms the heterogeneous transport observed in a straight pipe into a more homogeneous state with a narrower particle-velocity distribution. The results demonstrate that helical pipes can maintain efficient pneumatic conveying at moderate gas velocities while reducing excessive particle velocities.

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Cite

BibTeXRIS
BibTeX
@misc{ku2026helical,
  title = {{Helical pipes homogenize particle transport in pneumatic conveying}},
  author = {Wing To Ku and Patric Mueller and Thorsten Poeschel},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.01920},
  eprint = {2610.01920},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.01920},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Helical pipes homogenize particle transport in pneumatic conveying
AU  - Wing To Ku
AU  - Patric Mueller
AU  - Thorsten Poeschel
PY  - 2026
DA  - 2026/10/01
PB  - arXiv
DO  - 10.48550/arxiv.2610.01920
UR  - https://arxiv.org/abs/2610.01920
AB  - Pneumatic conveying at moderate gas velocities can result in strongly heterogeneous particle transport, with slow particles accumulating near the bottom of the pipe while faster particles are transported above. Here, we investigate helical pipes as a passive means of homogenizing particle transport without increasing the gas velocity. CFD-DEM simulations show that the helical pipe induces swirling motion of the gas and particles, continuously redistributing particles across the pipe cross-section. This transforms the heterogeneous transport observed in a straight pipe into a more homogeneous state with a narrower particle-velocity distribution. The results demonstrate that helical pipes can maintain efficient pneumatic conveying at moderate gas velocities while reducing excessive particle velocities.
ER  -