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    Drag induced lift in granular media

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    PhysRevLett.106.028001.pdf (453.4Kb)
    Date
    2011-01-14
    Author
    Ding, Yang
    Gravish, Nick
    Goldman, Daniel I.
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    Abstract
    Laboratory experiments and numerical simulation reveal that a submerged intruder dragged horizontally at a constant velocity within a granular medium experiences a lift force whose sign and magnitude depend on the intruder shape. Comparing the stress on a flat plate at varied inclination angle with the local surface stress on the intruders at regions with the same orientation demonstrates that intruder lift forces are well approximated as the sum of contributions from flat-plate elements. The plate stress is deduced from the force balance on the flowing media near the plate.
    URI
    http://hdl.handle.net/1853/44538
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    • Complex Rheology and Biomechanics Lab (CRAB LAB) [37]
    • Complex Rheology and Biomechanics Lab (CRAB LAB) Publications [37]

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