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Born, Philip and Bussmann, Michael and Schmitz, Johannes and Sperl, Matthias (2016) Drop tower setup for dynamic light scattering in dense gas-fluidized granular media. Microgravity Science and Technology, 28 (4), pp. 413-420. Springer. doi: 10.1007/s12217-016-9496-7. ISSN 0938-0108.
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Official URL: http://dx.doi.org/10.1007/s12217-016-9496-7
Abstract
Investigation of dynamics in dense granular media is challenging. Here we present a setup that facilitates gas fluidization of dense granular media in microgravity. The dynamics is characterized using diffusing wave spectroscopy. We demonstrate that agitated granular media reach a steady state within fractions of a second in drop tower flights. The intensity autocorrelation functions obtained in microgravity show a remarkable dependence on sample volume fraction and driving strength. A plateau in correlation emerges at low volume fractions and strong driving, while correlation decays only very slowly but continuously at high packing fractions. The setup allows to independently set sample volume fraction and driving strength, and thus extends the possibilities for investigations on dynamics in dense granular on ground.
| Item URL in elib: | https://elib.dlr.de/110334/ | ||||||||||||||||||||
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| Document Type: | Article | ||||||||||||||||||||
| Title: | Drop tower setup for dynamic light scattering in dense gas-fluidized granular media | ||||||||||||||||||||
| Authors: |
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| Date: | August 2016 | ||||||||||||||||||||
| Journal or Publication Title: | Microgravity Science and Technology | ||||||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||||||
| Open Access: | No | ||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||
| In SCOPUS: | Yes | ||||||||||||||||||||
| In ISI Web of Science: | Yes | ||||||||||||||||||||
| Volume: | 28 | ||||||||||||||||||||
| DOI: | 10.1007/s12217-016-9496-7 | ||||||||||||||||||||
| Page Range: | pp. 413-420 | ||||||||||||||||||||
| Publisher: | Springer | ||||||||||||||||||||
| ISSN: | 0938-0108 | ||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||
| Keywords: | dynamic light scattering, microgravity, granular matter | ||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||
| HGF - Program: | Space | ||||||||||||||||||||
| HGF - Program Themes: | Research under Space Conditions | ||||||||||||||||||||
| DLR - Research area: | Raumfahrt | ||||||||||||||||||||
| DLR - Program: | R FR - Research under Space Conditions | ||||||||||||||||||||
| DLR - Research theme (Project): | R - Model systems | ||||||||||||||||||||
| Location: | Köln-Porz | ||||||||||||||||||||
| Institutes and Institutions: | Institute of Materials Physics in Space | ||||||||||||||||||||
| Deposited By: | Sperl, Matthias | ||||||||||||||||||||
| Deposited On: | 09 Jan 2017 15:16 | ||||||||||||||||||||
| Last Modified: | 14 Nov 2023 12:46 |
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