Experimental and numerical analysis of void structure in random packed beds of spheres
Von Seckendorff J, Achterhold K, Pfeiffer F, Fischer R, Hinrichsen O (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 380
Pages Range: 613-628
DOI: 10.1016/j.powtec.2020.11.026
Abstract
The prediction of the pressure drop of packed beds requires an accurate estimation of the packed-bed porosity as its error propagation multiplies the occurring errors by a factor of about four. For a better understanding of the packed bed's local porosity characteristics, a comprehensive x-ray tomography study was performed investigating and correlating the void structure of packed beds made of smooth, mono-sized spheres in cylindrical confining walls having tube-to-particle diameter ratios λ = 3.0 to 9.0 reinforced by numerically generated packed beds of λ = 1.1 to 9.0. An in-depth analysis of the obtained oscillating void profiles is performed, discussing the locations and heights of porosity extrema. Most importantly, a significant and in parts surprising extrema formation in the tube's center is described, especially present for λ < 6, which is assumed to have a predominant effect on the packed bed's pressure drop.
Involved external institutions
Germany (DE)How to cite
APA:
Von Seckendorff, J., Achterhold, K., Pfeiffer, F., Fischer, R., & Hinrichsen, O. (2021). Experimental and numerical analysis of void structure in random packed beds of spheres. Powder Technology, 380, 613-628. https://doi.org/10.1016/j.powtec.2020.11.026
MLA:
Von Seckendorff, Jennie, et al. "Experimental and numerical analysis of void structure in random packed beds of spheres." Powder Technology 380 (2021): 613-628.
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