Darcy-Reynolds forces during intrusion into granular-fluid beds

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Darcy-Reynolds_forces_Preprint.pdf (551 KB)
Authors
Strader, Joshua
Causley, Neil
Dijksman, Joshua A.
Clark, Abram H.
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Advisors
Date of Issue
2021-07-28
Date
July 28, 2021
Publisher
ArXiv
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Abstract
We experimentally study intrusion into fluid-saturated granular beds by a free-falling sphere, varying particle size and fluid viscosity. We test our results against Darcy-Reynolds theory, where the deceleration of the sphere is controlled by Reynolds dilatancy and the Darcy flow resistance. We find the observed intruder dynamics are consistent with Darcy-Reynolds theory for varied particle size. We also find that our experimental results for varied viscosity are consistent with Darcy Reynolds theory, but only for a limited range of the viscosity. For large viscosities, observed forces begin to decrease with increasing viscosity, in contrast with the theoretical prediction.
Type
Preprint
Description
URI
https://hdl.handle.net/10945/67566
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Department
Physics
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Office of Naval Research
Office of Naval Research Global Visiting Scientist Program VSP 19-7-001
Funding
N0001419WX01519
Format
10 p.
Citation
Strader, Joshua, et al. "Darcy-Reynolds forces during intrusion into granular-fluid beds." arXiv preprint arXiv:2107.12584 (2021).
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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