Microscopic description of the granular fluidity field in nonlocal flow modeling
Name
1005081802-MIT.pdf
Description
Full printable version
Size
9.08 MB
Format
Adobe PDF
Checksum (MD5)
fe5ae30fda6c16be67ce259acf72a2b9
Author(s)
Zhang, Qiong, S.M. Massachusetts Institute of Technology
Advisor(s)
Kenneth Kamrin.
Date Issued
2017
Publisher
Massachusetts Institute of Technology
Abstract
A recent granular rheology based on an implicit 'granular fluidity' field has been shown to quantitatively predict many nonlocal phenomena. However, the physical nature of the field has not been identified. Here, the granular fluidity is found to be a kinematic variable given by the velocity fluctuation and packing fraction. This is verified with many discrete element simulations, which show the operational fluidity definition, solutions of the fluidity model, and the proposed microscopic formula all agree. Kinetic theoretical and Eyring-like explanations shed insight into the obtained form.
Description
Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2017.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 89-93).
Subjects
Mechanical Engineering.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
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